Trial Outcomes & Findings for ECOSPOR IV: An Open-Label Study Evaluating SER-109 in Recurrent Clostridioides Difficile Infection (NCT NCT03183141)

NCT ID: NCT03183141

Last Updated: 2023-04-10

Results Overview

Cohort 1: Recurrence of CDI up to 8 Weeks after treatment. Recurrence was determined by stool Clostridioides difficile toxin assay. Sustained clinical response was the absence of CDI recurrence up to 8 Weeks after treatment.

Recruitment status

COMPLETED

Study phase

PHASE3

Target enrollment

263 participants

Primary outcome timeframe

Up to Week 8

Results posted on

2023-04-10

Participant Flow

Overall, there were 64 sites in the United States and 8 sites in Canada that enrolled participants between 2017 to 2021.

Participant milestones

Participant milestones
Measure
Cohort 1
Rollover participants from study SERES-012, who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days in SERES-013 study.
Cohort 2
Newly enrolled participants who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days.
Overall Study
STARTED
29
234
Overall Study
Completed 8-week Follow-up
29
228
Overall Study
COMPLETED
27
222
Overall Study
NOT COMPLETED
2
12

Reasons for withdrawal

Reasons for withdrawal
Measure
Cohort 1
Rollover participants from study SERES-012, who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days in SERES-013 study.
Cohort 2
Newly enrolled participants who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days.
Overall Study
Withdrawal by Subject
2
4
Overall Study
Death
0
8

Baseline Characteristics

ECOSPOR IV: An Open-Label Study Evaluating SER-109 in Recurrent Clostridioides Difficile Infection

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Cohort 1
n=29 Participants
Rollover participants from study SERES-012, who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days in SERES-013 study.
Cohort 2
n=234 Participants
Newly enrolled participants who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days.
Total
n=263 Participants
Total of all reporting groups
Age, Continuous
71.7 years
STANDARD_DEVIATION 12.46 • n=5 Participants
63.1 years
STANDARD_DEVIATION 15.79 • n=7 Participants
64.0 years
STANDARD_DEVIATION 15.67 • n=5 Participants
Sex: Female, Male
Female
18 Participants
n=5 Participants
162 Participants
n=7 Participants
180 Participants
n=5 Participants
Sex: Female, Male
Male
11 Participants
n=5 Participants
72 Participants
n=7 Participants
83 Participants
n=5 Participants
Race/Ethnicity, Customized
White
29 Participants
n=5 Participants
214 Participants
n=7 Participants
243 Participants
n=5 Participants
Race/Ethnicity, Customized
Black or African American
0 Participants
n=5 Participants
14 Participants
n=7 Participants
14 Participants
n=5 Participants
Race/Ethnicity, Customized
Asian
0 Participants
n=5 Participants
5 Participants
n=7 Participants
5 Participants
n=5 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
0 Participants
n=5 Participants
1 Participants
n=7 Participants
1 Participants
n=5 Participants
Race/Ethnicity, Customized
Not Hispanic or Latino
29 Participants
n=5 Participants
214 Participants
n=7 Participants
243 Participants
n=5 Participants
Race/Ethnicity, Customized
Hispanic or Latino
0 Participants
n=5 Participants
20 Participants
n=7 Participants
20 Participants
n=5 Participants
Antibiotic regimen for qualifying episode
Vancomycin
22 Participants
n=5 Participants
169 Participants
n=7 Participants
191 Participants
n=5 Participants
Antibiotic regimen for qualifying episode
Fidaxomicin
7 Participants
n=5 Participants
65 Participants
n=7 Participants
72 Participants
n=5 Participants

PRIMARY outcome

Timeframe: Up to Week 8

Population: The analysis population consisted of all enrolled participants.

Cohort 1: Recurrence of CDI up to 8 Weeks after treatment. Recurrence was determined by stool Clostridioides difficile toxin assay. Sustained clinical response was the absence of CDI recurrence up to 8 Weeks after treatment.

Outcome measures

Outcome measures
Measure
Cohort 1
n=29 Participants
Rollover participants from study SERES-012, who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days in SERES-013 study.
Cohort 1: Recurrence of CDI and Sustained Clinical Response
Number of participants with CDI recurrence
4 Participants
Cohort 1: Recurrence of CDI and Sustained Clinical Response
Number of participants with sustained response
25 Participants

PRIMARY outcome

Timeframe: Up to Weeks 8 and 12

Population: The analysis population consisted of all enrolled participants.

Cohort 2: Recurrence of CDI up to 8 and 12 Weeks after treatment. Recurrence was determined by stool Clostridioides difficile toxin assay. Sustained clinical response was the absence of CDI recurrence up to 8 and 12 Weeks after treatment.

Outcome measures

Outcome measures
Measure
Cohort 1
n=234 Participants
Rollover participants from study SERES-012, who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days in SERES-013 study.
Cohort 2: Recurrence of CDI and Sustained Clinical Response
Week 8 · Number of participants with CDI recurrence
19 Participants
Cohort 2: Recurrence of CDI and Sustained Clinical Response
Week 8 · Number of participants with sustained clinical response
215 Participants
Cohort 2: Recurrence of CDI and Sustained Clinical Response
Week 12 · Number of participants with CDI recurrence
23 Participants
Cohort 2: Recurrence of CDI and Sustained Clinical Response
Week 12 · Number of participants with sustained clinical response
211 Participants

Adverse Events

Cohort 1

Serious events: 1 serious events
Other events: 14 other events
Deaths: 0 deaths

Cohort 2

Serious events: 32 serious events
Other events: 68 other events
Deaths: 8 deaths

Serious adverse events

Serious adverse events
Measure
Cohort 1
n=29 participants at risk
Rollover participants from study SERES-012, who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days in SERES-013 study.
Cohort 2
n=234 participants at risk
Newly enrolled participants who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days.
Infections and infestations
Cellulitis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
1.7%
4/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Urinary tract infection
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
1.3%
3/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Clostridium difficile colitis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.85%
2/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Clostridium difficile infection
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
1.7%
4/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Corona virus infection
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.85%
2/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Urosepsis
3.4%
1/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Abscess
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Abscess limb
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Cytomegalovirus viremia
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Endocarditis bacterial
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Escherichia bacteremia
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Necrotizing fasciitis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Peritonitis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Infections and infestations
Pneumonia
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Diarrhea
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.85%
2/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Ascites
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Duodenal ulcer hemorrhage
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Gastric ulcer hemorrhage
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Gastric volvulus
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Gastrointestinal hemorrhage
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Gastrointestinal perforation
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Intestinal perforation
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Mallory-Weiss syndrome
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Small intestinal obstruction
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Cardiac disorders
Cardiac failure acute
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.85%
2/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Cardiac disorders
Acute myocardial infarction
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Cardiac disorders
Atrial fibrillation
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Cardiac disorders
Cardiac failure chronic
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Cardiac disorders
Cardiac failure congestive
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Cardiac disorders
Congestive cardiomyopathy
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Cardiac disorders
Coronary artery disease
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Nervous system disorders
Syncope
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.85%
2/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Nervous system disorders
Facial paralysis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Nervous system disorders
Transient ischemic attack
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Respiratory, thoracic and mediastinal disorders
Pneumonia aspiration
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.85%
2/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Respiratory, thoracic and mediastinal disorders
Bronchospasm
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Respiratory, thoracic and mediastinal disorders
Dyspnea
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Respiratory, thoracic and mediastinal disorders
Pulmonary embolism
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Renal and urinary disorders
Acute kidney injury
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.85%
2/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Renal and urinary disorders
End stage renal disease
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Renal and urinary disorders
Nephrolithiasis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Injury, poisoning and procedural complications
Hip fracture
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Injury, poisoning and procedural complications
Road traffic accident
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Investigations
Amylase increased
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Investigations
Lipase increased
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Investigations
Platelet count decreased
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Musculoskeletal and connective tissue disorders
Chest wall hematoma
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Musculoskeletal and connective tissue disorders
Chronic recurrent multifocal osteomyelitis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Blood and lymphatic system disorders
Anemia
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
General disorders
Death due to natural causes
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Hepatobiliary disorders
Bile duct obstruction
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Hepatobiliary disorders
Cholangitis
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Metabolism and nutrition disorders
Dehydration
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Pancreatic carcinoma
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Pregnancy, puerperium and perinatal conditions
Ectopic pregnancy
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Product Issues
Device occlusion
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Skin and subcutaneous tissue disorders
Vasculitic ulcer
0.00%
0/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
0.43%
1/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.

Other adverse events

Other adverse events
Measure
Cohort 1
n=29 participants at risk
Rollover participants from study SERES-012, who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days in SERES-013 study.
Cohort 2
n=234 participants at risk
Newly enrolled participants who received oral dose of SER-109 in 4 capsules once daily for 3 consecutive days.
Gastrointestinal disorders
Diarrhea
34.5%
10/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
20.5%
48/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Flatulence
13.8%
4/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
6.8%
16/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Nausea
10.3%
3/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
7.3%
17/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
Gastrointestinal disorders
Abdominal pain
10.3%
3/29 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.
6.4%
15/234 • 24 weeks follow-up starting Day 1 post-dosing with SER-109
All adverse events were collected from Day 1 post-dosing to Week 8. From Week 8 onwards to the end of study (Week 24), only serious adverse events and adverse events of special interest (e.g., invasive infections) were collected.

Additional Information

Lisa von Moltke, MD, Chief Medical Officer

Seres Therapeutics

Phone: 617-945-9626

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place