Trial Outcomes & Findings for Comparison of 10 kHz SCS Combined With CMM to CMM Alone in the Treatment of Neuropathic Limb Pain (NCT NCT03228420)

NCT ID: NCT03228420

Last Updated: 2021-08-10

Results Overview

Difference between treatment groups in responder rates in subjects without a clinically meaningful neurological deficit compared with baseline. Responder is defined as a subject who has at least 50% reduction in lower limb pain from Baseline as measured by a 10 cm Visual Analog Scale (VAS).

Recruitment status

UNKNOWN

Study phase

NA

Target enrollment

430 participants

Primary outcome timeframe

3 months

Results posted on

2021-08-10

Participant Flow

Participants underwent screening prior to randomization to verify satisfaction of all inclusion/exclusion criteria. Medical records for enrolled participants were evaluated by independent medical monitors for oversight of appropriate patient selection.

Participant milestones

Participant milestones
Measure
HF10 Therapy Plus CMM
The addition of HF10 (10kHz SCS) therapy to Conventional Medical Management Senza HF10 Therapy: Senza 10kHz Spinal Cord Stimulation
CMM Alone
Conventional Medical Management CMM: Conventional Medical Management
Overall Study
STARTED
113
103
Overall Study
Month-1
95
101
Overall Study
Month-3
93
98
Overall Study
COMPLETED
93
98
Overall Study
NOT COMPLETED
20
5

Reasons for withdrawal

Reasons for withdrawal
Measure
HF10 Therapy Plus CMM
The addition of HF10 (10kHz SCS) therapy to Conventional Medical Management Senza HF10 Therapy: Senza 10kHz Spinal Cord Stimulation
CMM Alone
Conventional Medical Management CMM: Conventional Medical Management
Overall Study
Lost to Follow-up
5
3
Overall Study
Withdrawal by Subject
10
0
Overall Study
Adverse Event
5
2

Baseline Characteristics

Comparison of 10 kHz SCS Combined With CMM to CMM Alone in the Treatment of Neuropathic Limb Pain

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
HF10 Therapy Plus CMM
n=113 Participants
The addition of HF10 (10kHz SCS) therapy to Conventional Medical Management Senza HF10 Therapy: Senza 10kHz Spinal Cord Stimulation
CMM Alone
n=103 Participants
Conventional Medical Management CMM: Conventional Medical Management
Total
n=216 Participants
Total of all reporting groups
Age, Continuous
60.7 years
STANDARD_DEVIATION 11.4 • n=5 Participants
60.8 years
STANDARD_DEVIATION 9.9 • n=7 Participants
60.8 years
STANDARD_DEVIATION 10.7 • n=5 Participants
Sex: Female, Male
Female
43 Participants
n=5 Participants
37 Participants
n=7 Participants
80 Participants
n=5 Participants
Sex: Female, Male
Male
70 Participants
n=5 Participants
66 Participants
n=7 Participants
136 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
2 Participants
n=5 Participants
0 Participants
n=7 Participants
2 Participants
n=5 Participants
Race (NIH/OMB)
Asian
1 Participants
n=5 Participants
1 Participants
n=7 Participants
2 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
3 Participants
n=5 Participants
1 Participants
n=7 Participants
4 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
18 Participants
n=5 Participants
13 Participants
n=7 Participants
31 Participants
n=5 Participants
Race (NIH/OMB)
White
87 Participants
n=5 Participants
85 Participants
n=7 Participants
172 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
2 Participants
n=5 Participants
3 Participants
n=7 Participants
5 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
Lower limb pain visual analog scale (VAS) score
7.5 cm
STANDARD_DEVIATION 1.6 • n=5 Participants
7.1 cm
STANDARD_DEVIATION 1.6 • n=7 Participants
7.3 cm
STANDARD_DEVIATION 1.6 • n=5 Participants

PRIMARY outcome

Timeframe: 3 months

Population: Intention-to-treat population including all randomized patients whose status could be determined at the 3-month primary assessment, including patients who failed trial SCS and those who withdrew due to an adverse event at any point after the trial SCS phase in the active treatment arm.

Difference between treatment groups in responder rates in subjects without a clinically meaningful neurological deficit compared with baseline. Responder is defined as a subject who has at least 50% reduction in lower limb pain from Baseline as measured by a 10 cm Visual Analog Scale (VAS).

Outcome measures

Outcome measures
Measure
HF10 Therapy Plus CMM
n=95 Participants
The addition of HF10 (10kHz SCS) therapy to Conventional Medical Management Senza HF10 Therapy: Senza 10kHz Spinal Cord Stimulation
CMM Alone
n=94 Participants
Conventional Medical Management CMM: Conventional Medical Management
Composite of Safety and Effectiveness
75 Participants
5 Participants

SECONDARY outcome

Timeframe: 3 months

Difference between the treatment groups in proportion of subjects with a lower limb pain VAS score ≤ 3 cm.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 6 months

Difference between the treatment groups in crossover rates. Subjects who meet pre-specified criteria may elect to crossover to the other treatment arm at 6-month follow-up.

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 6 months

Difference between the treatment groups in responder rates. Responder is defined as a subject who has at least 50% reduction in lower limb pain from Baseline as measured by a 10 cm Visual Analog Scale (VAS).

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 6 months

Difference between the treatment groups in the proportion of remitters (remission is defined as having a lower limb pain VAS score of ≤ 3.0 cm for at least 6 months).

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 3 months

Difference between the treatment groups in the proportion of subjects with overall improvement from baseline in neurological assessment (motor, sensory, reflex).

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 6 months

Difference between the treatment groups in the proportion of subjects with overall improvement from baseline in neurological assessment (motor, sensory, reflex).

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 6 months

Difference between the treatment groups in changes in health-related quality of life as assessed by the EuroQol Five Dimensions questionnaire (EQ-5D-5L).

Outcome measures

Outcome data not reported

SECONDARY outcome

Timeframe: 6 months

Difference between the treatment groups in the average percentage change from baseline in HbA1c levels.

Outcome measures

Outcome data not reported

Adverse Events

HF10 Therapy Plus CMM

Serious events: 12 serious events
Other events: 0 other events
Deaths: 1 deaths

CMM Alone

Serious events: 9 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
HF10 Therapy Plus CMM
n=113 participants at risk
The addition of HF10 (10kHz SCS) therapy to Conventional Medical Management Senza HF10 Therapy: Senza 10kHz Spinal Cord Stimulation
CMM Alone
n=103 participants at risk
Conventional Medical Management CMM: Conventional Medical Management
Renal and urinary disorders
Acute kidney injury
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Cardiac disorders
Acute myocardial infarction
0.88%
1/113 • Number of events 1 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Gastrointestinal disorders
Diarrhoea
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Infections and infestations
Sepsis
0.88%
1/113 • Number of events 1 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Infections and infestations
Localised infection
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Injury, poisoning and procedural complications
Extradural haematoma
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Nervous system disorders
Paraplegia
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Nervous system disorders
Headache
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Gastrointestinal disorders
Nausea
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Vascular disorders
Hypotension
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Cardiac disorders
Coronary artery disease
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Vascular disorders
Orthostatic hypotension
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Infections and infestations
Wound infection staphylococcal
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Nervous system disorders
Embolic stroke
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Nervous system disorders
Encephalopathy
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Vascular disorders
Hypertensive emergency
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Injury, poisoning and procedural complications
Cervical vertebral fracture
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Infections and infestations
Pneumonia
0.88%
1/113 • Number of events 1 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Infections and infestations
Septic shock
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Infections and infestations
Staphylococcal infection
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Respiratory, thoracic and mediastinal disorders
Acute respiratory failure
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
General disorders
Chest pain
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
General disorders
Pyrexia
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Hepatobiliary disorders
Cholangitis acute
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Gastrointestinal disorders
Pancreatic mass
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Gastrointestinal disorders
Pancreatitis chronic
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Gastrointestinal disorders
Pancreatic disorder
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Musculoskeletal and connective tissue disorders
Osteoarthritis
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Cardiac disorders
Cardiac arrest
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Infections and infestations
Wound infection
0.88%
1/113 • Number of events 1 • 3 months
0.00%
0/103 • 3 months
Infections and infestations
Endocarditis
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months
Cardiac disorders
Myocardial infarction
0.00%
0/113 • 3 months
0.97%
1/103 • Number of events 1 • 3 months

Other adverse events

Adverse event data not reported

Additional Information

Donald Middlebrook

Nevro Corp.

Phone: (650) 433-2218

Results disclosure agreements

  • Principal investigator is a sponsor employee Initial publication of the results will be a joint, multicenter publication with all PIs and sites contributing data, analyses, and critical review of the manuscript. If no such publication occurs within 12 months of study completion, individual PIs may publish results from their center. PIs will allow sponsor 30 days to review any potential publications or presentations and sponsor can request an additional 60 days if needed.
  • Publication restrictions are in place

Restriction type: OTHER