Trial Outcomes & Findings for Avelumab for People With Recurrent Respiratory Papillomatosis (NCT NCT02859454)

NCT ID: NCT02859454

Last Updated: 2021-11-02

Results Overview

The Derkay is an objective score based on the number of sites and bulkiness of papillomas within the pharynx, larynx and trachea and a subjective score determined by voice and treating symptoms. Complete response is assessed by The Derkay Staging System which is defined as a physical exam and/or clinic-based flexible nasopharyngolaryngoscopy and/or tracheoscopy, exam under anesthesia with endoscopy and biopsies; no evidence of papillomas on physical exam and/or clinic based flexible nasopharyngolaryngoscopy and/or tracheoscopy; and no evidence of papillomas by exam under anesthesia (sedation or general anesthesia) with endoscopy and biopsies.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

13 participants

Primary outcome timeframe

Disease response was performed at 6 and 12 weeks after the first dose of Avelumab. Patients who experience a complete response will be evaluated every 6 weeks x 3, then every 12 weeks x 3, then every 26 weeks x 2 or until disease progression,up to 3 years

Results posted on

2021-11-02

Participant Flow

Participant milestones

Participant milestones
Measure
Avelumab
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Overall Study
STARTED
13
Overall Study
COMPLETED
12
Overall Study
NOT COMPLETED
1

Reasons for withdrawal

Reasons for withdrawal
Measure
Avelumab
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Overall Study
PI discretion/off study prior to trtmt
1

Baseline Characteristics

Avelumab for People With Recurrent Respiratory Papillomatosis

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Avelumab
n=13 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Age, Categorical
<=18 years
0 Participants
n=5 Participants
Age, Categorical
Between 18 and 65 years
13 Participants
n=5 Participants
Age, Categorical
>=65 years
0 Participants
n=5 Participants
Age, Continuous
46.95 years
STANDARD_DEVIATION 15.83 • n=5 Participants
Sex: Female, Male
Female
6 Participants
n=5 Participants
Sex: Female, Male
Male
7 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
12 Participants
n=5 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=5 Participants
Race (NIH/OMB)
Asian
2 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=5 Participants
Race (NIH/OMB)
White
10 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
1 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
Region of Enrollment
United States
13 Participants
n=5 Participants
Patients Who Had Repeated Endoscopic Debulking to Remove Paillomatosis Lesions Prior to Treatment
13 Participants
n=5 Participants

PRIMARY outcome

Timeframe: Disease response was performed at 6 and 12 weeks after the first dose of Avelumab. Patients who experience a complete response will be evaluated every 6 weeks x 3, then every 12 weeks x 3, then every 26 weeks x 2 or until disease progression,up to 3 years

Population: Nine of twelve patients had evaluable laryngotracheal disease as assessed by clinical endoscopy.

The Derkay is an objective score based on the number of sites and bulkiness of papillomas within the pharynx, larynx and trachea and a subjective score determined by voice and treating symptoms. Complete response is assessed by The Derkay Staging System which is defined as a physical exam and/or clinic-based flexible nasopharyngolaryngoscopy and/or tracheoscopy, exam under anesthesia with endoscopy and biopsies; no evidence of papillomas on physical exam and/or clinic based flexible nasopharyngolaryngoscopy and/or tracheoscopy; and no evidence of papillomas by exam under anesthesia (sedation or general anesthesia) with endoscopy and biopsies.

Outcome measures

Outcome measures
Measure
Avelumab
n=9 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 6 Weeks
All participants Voice Handicap Index-10 Score at 6 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 12 Weeks
All participants Voice Handicap Index-10 Score at 12 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Number of Patients With Laryngotracheal Recurrent Respiratory Papillomatosis (RPP) Who Achieve a Complete Response With Avelumab as Measured by Derkay Score Calculated From Clinical Endoscopy
0 Participants

PRIMARY outcome

Timeframe: Disease response was performed at 6 and 12 weeks after the first dose of Avelumab. Patients who experience a complete response will be evaluated every 6 weeks x 3, then every 12 weeks x 3, then every 26 weeks x 2 or until disease progression,up to 3 years

Population: Four of twelve patients had evaluable pulmonary disease as assessed by CT scan.

Complete response is measured by The Response Criteria in Solid Tumors (RECIST) v1.1 calculated from chest CT scans. Complete response is absence of disease (e.g., lesions) by imaging.

Outcome measures

Outcome measures
Measure
Avelumab
n=4 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 6 Weeks
All participants Voice Handicap Index-10 Score at 6 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 12 Weeks
All participants Voice Handicap Index-10 Score at 12 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Number of Patients With Pulmonary Recurrent Respiratory Papillomatosis (RPP) Who Achieve a Complete Response With Avelumab as Measured by the Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 Calculated From Chest Computed Tomography (CT) Scans
0 Participants

SECONDARY outcome

Timeframe: Baseline, 6 weeks, and 12 weeks after the first dose of Avelumab.

Population: Only one participant in each row contributed data in each row.

The Voice Handicap Index-10 questionnaire (as measured by derkay score) consists of 10 questions and determines whether a participant has a voice handicap. The scoring options for each question range from 0 (for never) to 4 (for always). The total scores (combined value from all 10 questions) range from 0 - 40. Higher scores represent a worse voice handicap. Lower scores represent a less voice handicap.

Outcome measures

Outcome measures
Measure
Avelumab
n=12 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 6 Weeks
n=12 Participants
All participants Voice Handicap Index-10 Score at 6 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 12 Weeks
n=12 Participants
All participants Voice Handicap Index-10 Score at 12 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 1
26 scores on a scale
22 scores on a scale
23 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 2
9 scores on a scale
12 scores on a scale
3 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 6
19 scores on a scale
0 scores on a scale
0 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 7
40 scores on a scale
21 scores on a scale
18 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 3
40 scores on a scale
37 scores on a scale
38 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 4
17 scores on a scale
16 scores on a scale
16 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 5
12 scores on a scale
2 scores on a scale
1 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 8
30 scores on a scale
35 scores on a scale
29 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 9
37 scores on a scale
40 scores on a scale
40 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 10
18 scores on a scale
11 scores on a scale
12 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 11
18 scores on a scale
9 scores on a scale
0 scores on a scale
Effect of Treatment With Avelumab on Voice Handicap Index-10 Score
Patient 13
18 scores on a scale
19 scores on a scale
15 scores on a scale

SECONDARY outcome

Timeframe: Disease response was performed at 6 and 12 weeks after the first dose of Avelumab. Patients who experience a complete response will be evaluated every 6 weeks x 3, then every 12 weeks x 3, then every 26 weeks x 2 or until disease progression,up to 3 years

Population: Nine of twelve patients had evaluable laryngotracheal disease as assessed by clinical endoscopy.

Partial response is assessed by flexible nasopharyngolaryngoscopy and/or tracheoscopy using the Derkay staging system if the patient does not have pulmonary disease. The Derkay is an objective score based on the number of sites and bulkiness of papillomas within the pharynx, larynx and trachea and a subjective score determined by voice and treating symptoms. Partial response is a decrease in Derkay anatomic score of 30% or greater.

Outcome measures

Outcome measures
Measure
Avelumab
n=9 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 6 Weeks
All participants Voice Handicap Index-10 Score at 6 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 12 Weeks
All participants Voice Handicap Index-10 Score at 12 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Number of Patients With Laryngotracheal Recurrent Respiratory Papillomatosis (RPP) Who Achieve a Partial Response With Avelumab as Measured by Derkay Score Calculated From Clinical Endoscopy
6 Participants

SECONDARY outcome

Timeframe: Disease response was performed at 6 and 12 weeks after the first dose of Avelumab. Patients who experience a complete response will be evaluated every 6 weeks x 3, then every 12 weeks x 3, then every 26 weeks x 2 or until disease progression, up to 3 year

Population: Four of twelve patients had evaluable pulmonary disease as assessed by CT scan.

Partial response assessed by imaging using RECIST v1.1. is defined as a ≥ 30% decrease in the sum of the longest diameters of target lesions compared with baseline.

Outcome measures

Outcome measures
Measure
Avelumab
n=4 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 6 Weeks
All participants Voice Handicap Index-10 Score at 6 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 12 Weeks
All participants Voice Handicap Index-10 Score at 12 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Number of Patients With Pulmonary Recurrent Respiratory Papillomatosis (RPP) Who Achieve a Partial Response With Avelumab as Measured by the Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 Calculated From Chest Computed Tomography (CT) Scans
0 Participants

SECONDARY outcome

Timeframe: Disease response was performed at 6 and 12 weeks after the first dose of Avelumab. Patients who experience a complete response will be evaluated every 6 weeks x 3, then every 12 weeks x 3, then every 26 weeks x 2 or until disease progression,up to 4.5 yrs

Population: 5/12 participants were evaluable for this outcome measure.

The duration of clinical responses to Avelumab is calculated from the protocol end of treatment endoscopic debulking to the next clinically indicated endoscopic debulking procedure.

Outcome measures

Outcome measures
Measure
Avelumab
n=5 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 6 Weeks
All participants Voice Handicap Index-10 Score at 6 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 12 Weeks
All participants Voice Handicap Index-10 Score at 12 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Duration of Clinical Responses to Avelumab
14.7 Months
Interval 4.5 to 51.0

SECONDARY outcome

Timeframe: Date treatment consent signed to date off study, approximately 28 months and 20 days.

Here is the count of participants with serious and non-serious adverse events assessed by the Common Terminology Criteria in Adverse Events (CTCAE v4.0). A non-serious adverse event is any untoward medical occurrence. A serious adverse event is an adverse event or suspected adverse reaction that results in death, a life threatening adverse drug experience, hospitalization, disruption of the ability to conduct normal life functions, congenital anomaly/birth defect or important medical events that jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the previous outcomes mentioned.

Outcome measures

Outcome measures
Measure
Avelumab
n=13 Participants
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 6 Weeks
All participants Voice Handicap Index-10 Score at 6 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
All Participants at 12 Weeks
All participants Voice Handicap Index-10 Score at 12 Weeks. Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Number of Participants With Serious and Non-serious Adverse Events
13 Participants

Adverse Events

Avelumab

Serious events: 2 serious events
Other events: 13 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Avelumab
n=13 participants at risk
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Cardiac disorders
Cardiac disorders - Other, Stress cardiomyopathy
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Gastrointestinal disorders
Diarrhea
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Vascular disorders
Hypotension
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Gastrointestinal disorders
Ileus
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Respiratory, thoracic and mediastinal disorders
Respiratory failure
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Gastrointestinal disorders
Small intestinal obstruction
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.

Other adverse events

Other adverse events
Measure
Avelumab
n=13 participants at risk
Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses. Avelumab: Avelumab 10 mg/kg intravenous (IV) every 2 weeks for up to 6 doses.
Gastrointestinal disorders
Abdominal pain
7.7%
1/13 • Number of events 2 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Respiratory, thoracic and mediastinal disorders
Allergic rhinitis
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Blood and lymphatic system disorders
Anemia
15.4%
2/13 • Number of events 3 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Psychiatric disorders
Anxiety
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Musculoskeletal and connective tissue disorders
Back pain
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Cardiac disorders
Cardiac disorders - Other, Stress cardiomyopathy
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Cardiac disorders
Cardiac troponin I increased
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
General disorders
Chills
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Gastrointestinal disorders
Constipation
15.4%
2/13 • Number of events 2 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Gastrointestinal disorders
Dry mouth
38.5%
5/13 • Number of events 9 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Skin and subcutaneous tissue disorders
Dry skin
7.7%
1/13 • Number of events 2 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Nervous system disorders
Dysgeusia
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
General disorders
Edema limbs
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Cardiac disorders
Ejection fraction decreased
7.7%
1/13 • Number of events 2 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
General disorders
Fatigue
53.8%
7/13 • Number of events 11 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
General disorders
Fever
23.1%
3/13 • Number of events 4 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Nervous system disorders
Headache
30.8%
4/13 • Number of events 7 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Metabolism and nutrition disorders
Hypermagnesemia
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Metabolism and nutrition disorders
Hypernatremia
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Vascular disorders
Hypertension
61.5%
8/13 • Number of events 41 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Endocrine disorders
Hyperthyroidism
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Metabolism and nutrition disorders
Hypokalemia
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Metabolism and nutrition disorders
Hypophosphatemia
15.4%
2/13 • Number of events 3 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Vascular disorders
Hypotension
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Infections and infestations
Infections and infestations - Other, yeast infection
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
General disorders
Infusion related reaction
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Psychiatric disorders
Insomnia
15.4%
2/13 • Number of events 2 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
General disorders
Malaise
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Infections and infestations
Mucosal infection
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Gastrointestinal disorders
Nausea
30.8%
4/13 • Number of events 8 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Musculoskeletal and connective tissue disorders
Neck pain
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Investigations
Neutrophil count decreased
7.7%
1/13 • Number of events 2 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
General disorders
Pain
7.7%
1/13 • Number of events 1 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Skin and subcutaneous tissue disorders
Rash maculo-papular
15.4%
2/13 • Number of events 3 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Cardiac disorders
Sinus bradycardia
38.5%
5/13 • Number of events 10 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Cardiac disorders
Sinus tachycardia
23.1%
3/13 • Number of events 8 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Respiratory, thoracic and mediastinal disorders
Sore throat
15.4%
2/13 • Number of events 2 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Gastrointestinal disorders
Vomiting
15.4%
2/13 • Number of events 3 • Date treatment consent signed to date off study, approximately 28 months and 20 days.
Investigations
White blood cell decreased
15.4%
2/13 • Number of events 3 • Date treatment consent signed to date off study, approximately 28 months and 20 days.

Additional Information

Scott Norberg, DO

National Cancer Institute

Phone: 301-275-9668

Results disclosure agreements

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