Trial Outcomes & Findings for Study of the Efficacy, Safety, and Tolerability of Serlopitant for the Treatment of Chronic Pruritus of Unknown Origin (NCT NCT03841331)

NCT ID: NCT03841331

Last Updated: 2021-05-20

Results Overview

During the study, Worst Itch Numeric Rating Scale (WI-NRS) assessments was reported by the subject via eDiary. The daily NRS results were summarized. The daily results were averaged to create weekly measures. The Itch NRS is a validated, self-reported, instrument for measurement of itch intensity. It used a 24-hour recall period and asked subjects to rate the intensity of their itch on an 11-point scale ranging from 0 (no itch) to 10 (worst itch imaginable), higher scores indicated greater itch intensity. A subject was a 4-point responder if their change from baseline is ≤ -4 (i.e. a decrease of at least 4).

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

233 participants

Primary outcome timeframe

At Week 10

Results posted on

2021-05-20

Participant Flow

The study was conducted at 41 sites in US from 22 January 2019 to 21 January 2020. All subjects who met the study entry criteria were randomized in a 1:1 ratio to receive daily oral doses of serlopitant 5 mg or placebo.

During the screening period (3 weeks), all subjects were evaluated for eligibility and assessed for conditions associated with chronic pruritus. Subjects were to complete an electronic diary (eDiary) at the Screening visit.

Participant milestones

Participant milestones
Measure
Placebo
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Overall Study
STARTED
117
116
Overall Study
COMPLETED
108
106
Overall Study
NOT COMPLETED
9
10

Reasons for withdrawal

Reasons for withdrawal
Measure
Placebo
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Overall Study
Withdrawal by Subject
4
9
Overall Study
Lost to Follow-up
5
1

Baseline Characteristics

Study of the Efficacy, Safety, and Tolerability of Serlopitant for the Treatment of Chronic Pruritus of Unknown Origin

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Total
n=233 Participants
Total of all reporting groups
Age, Continuous
58.1 years
STANDARD_DEVIATION 12.05 • n=39 Participants
60.7 years
STANDARD_DEVIATION 13.60 • n=41 Participants
59.4 years
STANDARD_DEVIATION 12.89 • n=35 Participants
Sex: Female, Male
Female
93 Participants
n=39 Participants
83 Participants
n=41 Participants
176 Participants
n=35 Participants
Sex: Female, Male
Male
24 Participants
n=39 Participants
33 Participants
n=41 Participants
57 Participants
n=35 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
n=39 Participants
1 Participants
n=41 Participants
2 Participants
n=35 Participants
Race (NIH/OMB)
Asian
4 Participants
n=39 Participants
4 Participants
n=41 Participants
8 Participants
n=35 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=39 Participants
0 Participants
n=41 Participants
0 Participants
n=35 Participants
Race (NIH/OMB)
Black or African American
15 Participants
n=39 Participants
7 Participants
n=41 Participants
22 Participants
n=35 Participants
Race (NIH/OMB)
White
95 Participants
n=39 Participants
102 Participants
n=41 Participants
197 Participants
n=35 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=39 Participants
2 Participants
n=41 Participants
2 Participants
n=35 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants
n=39 Participants
0 Participants
n=41 Participants
2 Participants
n=35 Participants

PRIMARY outcome

Timeframe: At Week 10

Population: Full Analysis Population: subset of subjects in the randomized population who were dispensed study medication.

During the study, Worst Itch Numeric Rating Scale (WI-NRS) assessments was reported by the subject via eDiary. The daily NRS results were summarized. The daily results were averaged to create weekly measures. The Itch NRS is a validated, self-reported, instrument for measurement of itch intensity. It used a 24-hour recall period and asked subjects to rate the intensity of their itch on an 11-point scale ranging from 0 (no itch) to 10 (worst itch imaginable), higher scores indicated greater itch intensity. A subject was a 4-point responder if their change from baseline is ≤ -4 (i.e. a decrease of at least 4).

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Worst Itch Numeric Rating Scale 4-point Responder Rate at Week 10
46 Participants
44 Participants

PRIMARY outcome

Timeframe: At Weeks 2, 4, 6, and 8

Population: Full Analysis Population: subset of subjects in the randomized population who were dispensed study medication.

During the study, Worst Itch Numeric Rating Scale (WI-NRS) assessments was reported by the subject via eDiary. The daily NRS results were summarized. The daily results were averaged to create weekly measures. The Itch NRS is a validated, self-reported, instrument for measurement of itch intensity. It used a 24-hour recall period and asked subjects to rate the intensity of their itch on an 11-point scale ranging from 0 (no itch) to 10 (worst itch imaginable), higher scores indicated greater itch intensity. A subject was a 4-point responder if their change from baseline is ≤ -4 (i.e. a decrease of at least 4).

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
WI-NRS 4-point Responder Rate at Weeks 2 4, 6, and 8
Responders at Week 2
19 Participants
18 Participants
WI-NRS 4-point Responder Rate at Weeks 2 4, 6, and 8
Responders at Week 4
29 Participants
24 Participants
WI-NRS 4-point Responder Rate at Weeks 2 4, 6, and 8
Responders at Week 6
35 Participants
38 Participants
WI-NRS 4-point Responder Rate at Weeks 2 4, 6, and 8
Responders at Week 8
40 Participants
37 Participants

PRIMARY outcome

Timeframe: At Weeks 2, 4, 6, 8, and 10

Population: Full Analysis Population: subset of subjects in the randomized population who were dispensed study medication.

During the study, Worst Itch Numeric Rating Scale (WI-NRS) assessments was reported by the subject via eDiary. The daily NRS results were summarized. The daily results were averaged to create weekly measures. The Itch NRS is a validated, self-reported, instrument for measurement of itch intensity. It used a 24-hour recall period and asked subjects to rate the intensity of their itch on an 11-point scale ranging from 0 (no itch) to 10 (worst itch imaginable), higher scores indicated greater itch intensity. A subject was a 3-point responder if their change from baseline is ≤ -3 (i.e. a decrease of at least 3). Results presented below is of subjects who were a 3-point responder but not a 4-point responder.

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
WI-NRS 3-point Responder Rate at Weeks 2, 4, 6, 8, and 10
Responders at Week 10
13 Participants
16 Participants
WI-NRS 3-point Responder Rate at Weeks 2, 4, 6, 8, and 10
Responders at Week 2
6 Participants
6 Participants
WI-NRS 3-point Responder Rate at Weeks 2, 4, 6, 8, and 10
Responders at Week 4
8 Participants
14 Participants
WI-NRS 3-point Responder Rate at Weeks 2, 4, 6, 8, and 10
Responders at Week 6
15 Participants
10 Participants
WI-NRS 3-point Responder Rate at Weeks 2, 4, 6, 8, and 10
Responders at Week 8
14 Participants
15 Participants

PRIMARY outcome

Timeframe: At Weeks 2, 4, 6, 8, and 10

Population: Full Analysis Population: subset of subjects in the randomized population who were dispensed study medication.

During the study, Worst Itch Numeric Rating Scale (WI-NRS) assessments was reported by the subject via eDiary. The daily NRS results were summarized. The daily results were averaged to create weekly measures. The Itch NRS is a validated, self-reported, instrument for measurement of itch intensity. It used a 24-hour recall period and asked subjects to rate the intensity of their itch on an 11-point scale ranging from 0 (no itch) to 10 (worst itch imaginable), higher scores indicated greater itch intensity.

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Change From Baseline in WI-NRS at Weeks 2, 4, 6, 8, and 10
Change from Basline at Week 8
-2.99 score on a scale
Standard Deviation 2.647
-2.97 score on a scale
Standard Deviation 2.562
Change From Baseline in WI-NRS at Weeks 2, 4, 6, 8, and 10
Change from Baseline at Week 10
-3.34 score on a scale
Standard Deviation 2.787
-3.25 score on a scale
Standard Deviation 2.545
Change From Baseline in WI-NRS at Weeks 2, 4, 6, 8, and 10
Baseline (Observed value)
8.37 score on a scale
Standard Deviation 0.929
8.44 score on a scale
Standard Deviation 0.855
Change From Baseline in WI-NRS at Weeks 2, 4, 6, 8, and 10
Change from Baseline at Week 2
-1.65 score on a scale
Standard Deviation 2.115
-1.61 score on a scale
Standard Deviation 1.961
Change From Baseline in WI-NRS at Weeks 2, 4, 6, 8, and 10
Change from Baseline at Week 4
-2.41 score on a scale
Standard Deviation 2.382
-2.46 score on a scale
Standard Deviation 2.349
Change From Baseline in WI-NRS at Weeks 2, 4, 6, 8, and 10
Change from Baseline at Week 6
-2.83 score on a scale
Standard Deviation 2.624
-2.94 score on a scale
Standard Deviation 2.495

PRIMARY outcome

Timeframe: Through 2 weeks

Population: Full Analysis Population: subset of subjects in the randomized population who were dispensed study medication.

During the study, Worst Itch Numeric Rating Scale (WI-NRS) assessments was reported by the subject via eDiary. The daily NRS results were summarized. The daily results were averaged to create weekly measures. The Itch NRS is a validated, self-reported, instrument for measurement of itch intensity. It used a 24-hour recall period and asked subjects to rate the intensity of their itch on an 11-point scale ranging from 0 (no itch) to 10 (worst itch imaginable), higher scores indicated greater itch intensity.

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 1
-0.22 score on a scale
Standard Deviation 0.879
-0.09 score on a scale
Standard Deviation 0.819
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 2
-0.85 score on a scale
Standard Deviation 1.836
-0.69 score on a scale
Standard Deviation 1.264
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 3
-0.94 score on a scale
Standard Deviation 1.788
-0.77 score on a scale
Standard Deviation 1.348
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 4
-1.16 score on a scale
Standard Deviation 1.977
-0.96 score on a scale
Standard Deviation 1.459
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 9
-1.53 score on a scale
Standard Deviation 2.210
-1.35 score on a scale
Standard Deviation 1.996
Change From Baseline in Daily WI-NRS Scores Through Week 2
Baseline (observed value)
8.37 score on a scale
Standard Deviation 0.929
8.44 score on a scale
Standard Deviation 0.855
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 5
-1.34 score on a scale
Standard Deviation 2.103
-0.99 score on a scale
Standard Deviation 1.495
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 6
-1.33 score on a scale
Standard Deviation 2.174
-1.15 score on a scale
Standard Deviation 1.892
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 7
-1.44 score on a scale
Standard Deviation 2.331
-1.35 score on a scale
Standard Deviation 1.758
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 8
-1.35 score on a scale
Standard Deviation 2.171
-1.35 score on a scale
Standard Deviation 1.746
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 10
-1.63 score on a scale
Standard Deviation 2.460
-1.41 score on a scale
Standard Deviation 2.023
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 11
-1.73 score on a scale
Standard Deviation 2.333
-1.69 score on a scale
Standard Deviation 2.211
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 12
-1.67 score on a scale
Standard Deviation 2.280
-1.58 score on a scale
Standard Deviation 2.247
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 13
-1.82 score on a scale
Standard Deviation 2.335
-1.75 score on a scale
Standard Deviation 2.291
Change From Baseline in Daily WI-NRS Scores Through Week 2
Change from Baseline at Day 14
-1.92 score on a scale
Standard Deviation 2.518
-1.74 score on a scale
Standard Deviation 2.266

PRIMARY outcome

Timeframe: At Weeks 2, 4, 6, and 10

Population: Full Analysis Population: subset of subjects in the randomized population who were dispensed study medication.

The Itch Visual Analog Scale (VAS) is a validated, self-reported instrument for measurement of itch intensity. It used a 24-hour recall period and asked subjects to rate the worst intensity of their itch on a 100-mm horizontal line ranging from 0 mm (no itch) to 100 mm (worst itch imaginable). Higher scores indicated greater itch intensity. The VAS measurement were summarized in centimeters. WI-VAS assessments were reported by the subject via a paper form administered at study visits.

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Change From Baseline in Worst-Itch Visual Analog Scale at Weeks 2, 4, 6, and 10
Baseline (Observed Value)
82.09 score on a scale
Standard Deviation 10.741
83.53 score on a scale
Standard Deviation 11.941
Change From Baseline in Worst-Itch Visual Analog Scale at Weeks 2, 4, 6, and 10
Change from Baseline at Week 2
-22.96 score on a scale
Standard Deviation 27.425
-20.52 score on a scale
Standard Deviation 28.825
Change From Baseline in Worst-Itch Visual Analog Scale at Weeks 2, 4, 6, and 10
Change from Baseline at Week 4
-27.01 score on a scale
Standard Deviation 28.906
-28.28 score on a scale
Standard Deviation 29.731
Change From Baseline in Worst-Itch Visual Analog Scale at Weeks 2, 4, 6, and 10
Change from Baseline at Week 6
-32.83 score on a scale
Standard Deviation 31.046
-30.92 score on a scale
Standard Deviation 31.487
Change From Baseline in Worst-Itch Visual Analog Scale at Weeks 2, 4, 6, and 10
Change from Baseline at Week 10
-37.64 score on a scale
Standard Deviation 31.613
-37.42 score on a scale
Standard Deviation 32.986

SECONDARY outcome

Timeframe: From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.

Population: Safety Population - Subset of subjects who received at least one dose of study medication

Adverse events (AEs) were recorded to assess the safety and tolerability of repeated oral doses of serlopitant in adult subjects with chronic pruritus of unknown origin. Adverse events (AEs) and SAEs were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Number of Subjects With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
TEAEs Leading to Treatment Discontinuation
2 Participants
2 Participants
Number of Subjects With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
TEAEs Likely Related to Study Drug
3 Participants
12 Participants
Number of Subjects With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
TEAEs
38 Participants
49 Participants
Number of Subjects With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Serious TEAEs
0 Participants
2 Participants

SECONDARY outcome

Timeframe: At Week 10

The plasma concentrations of serlopitant and metabolites were combined with the data from other serlopitant clinical studies for population pharmacokinetic analysis.

Outcome measures

Outcome measures
Measure
Placebo
n=117 Participants
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 Participants
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Plasma Concentrations of Serlopitant and Metabolites
Met-Serl-M1/M1a
0.2 nmol/L
Standard Deviation 2.02
150.8 nmol/L
Standard Deviation 120.33
Plasma Concentrations of Serlopitant and Metabolites
Met-Serl-M2/M2a
0.1 nmol/L
Standard Deviation 0.81
41.6 nmol/L
Standard Deviation 26.69
Plasma Concentrations of Serlopitant and Metabolites
Met-Serl-M3
0.0 nmol/L
Standard Deviation 0.46
60.9 nmol/L
Standard Deviation 39.43
Plasma Concentrations of Serlopitant and Metabolites
Serlopitant
0.3 nmol/L
Standard Deviation 3.09
634.6 nmol/L
Standard Deviation 441.07

Adverse Events

Placebo

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

Serlopitant 5 mg

Serious events: 2 serious events
Other events: 12 other events
Deaths: 0 deaths

Serious adverse events

Serious adverse events
Measure
Placebo
n=117 participants at risk
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 participants at risk
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Nervous system disorders
Intracranial mass
0.00%
0/117 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
0.86%
1/116 • Number of events 1 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Metastasis
0.00%
0/117 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
0.86%
1/116 • Number of events 1 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
Respiratory, thoracic and mediastinal disorders
Pulmonary embolism
0.00%
0/117 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
0.86%
1/116 • Number of events 1 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.

Other adverse events

Other adverse events
Measure
Placebo
n=117 participants at risk
Randomized subjects received daily oral doses of placebo following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Serlopitant 5 mg
n=116 participants at risk
Randomized subjects received daily oral doses of serlopitant 5 mg following an initial 3-tablet loading dose on Day 1. Starting on Day 2, subjects took 1 tablet per day until the completion of the 10-week treatment period.
Gastrointestinal disorders
Diarrhoea
0.00%
0/117 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
6.9%
8/116 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
Nervous system disorders
Somnolence
0.85%
1/117 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.
5.2%
6/116 • From screening until the Follow-up (F/U) visit which occurred 35 days (+ 7 days) after the Week 10 visit or the last dose of study drug for subjects who discontinued study drug early.
Adverse events (AEs) and serious adverse events (SAEs) were recorded from the first study drug administration through the follow-up visit. After informed consent was signed, but prior to initiation of study drug, only SAEs considered by the investigator to be caused by a protocol-mandated intervention were collected.

Additional Information

Iain Stuart

Menlo Therapeutics, Inc.

Phone: 1-800-775-7936

Results disclosure agreements

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

Restriction type: GT60