Cochrane · systematic review · CD013128

Interventions for chronic pruritus of unknown origin

Andrade, A, Kuah, CY, Martin‐Lopez, JE, et al. · Cochrane Database of Systematic Reviews · 2020 · Cochrane Library

SkinAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
18
current version
GRADE rated
12
No studies
6
Included studies
NR
No studies 6 · 33.3%Ungraded 0 · 0%Very low 9 · 50%Low 3 · 16.7%Moderate 0 · 0%High 0 · 0%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

Serlopitant 5 mg compared to placebo for chronic pruritus of unknown origin

Population: chronic pruritus of unknown origin
6 questions
OutcomeEffectEvidenceStatus / GRADE
Patient‐reported pruritus intensity
Serlopitant 5 mg vs placebo
RR 2.06 [1.27, 3.35]1 study · 126 participantsLow
Downgraded: imprecision, indirectness
Adverse events
Serlopitant 5 mg vs placebo
RR 1.48 [0.87, 2.5]1 study · 127 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Health‐related quality of life
Serlopitant 5 mg vs placebo
no estimate extracted1 study · 127 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Sleep disturbances: number of participants with insomnia
Serlopitant 5 mg vs placebo
RR 0.49 [0.24, 1.01]1 study · 128 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Depression
Serlopitant 5 mg vs placebo
no estimate extractedNRNo studies
Patient satisfaction
Serlopitant 5 mg vs placebo
no estimate extractedNRNo studies

Serlopitant 1 mg compared to placebo for chronic pruritus of unknown origin

Population: chronic pruritus of unknown origin
6 questions
OutcomeEffectEvidenceStatus / GRADE
Patient‐reported pruritus intensity
Serlopitant 1 mg vs placebo
RR 1.5 [0.89, 2.54]1 study · 126 participantsLow
Downgraded: imprecision, indirectness
Adverse events
Serlopitant 1 mg vs placebo
RR 1.45 [0.86, 2.47]1 study · 128 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Health‐related quality of life
Serlopitant 1 mg vs placebo
no estimate extracted1 study · 128 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Sleep disturbances: number of participants with insomnia
Serlopitant 1 mg vs placebo
RR 0.38 [0.17, 0.84]1 study · 128 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Depression
Serlopitant 1 mg vs placebo
no estimate extractedNRNo studies
Patient satisfaction
Serlopitant 1 mg vs placebo
no estimate extractedNRNo studies

Serlopitant 0.25 mg compared to placebo for chronic pruritus of unknown origin

Population: chronic pruritus of unknown origin
6 questions
OutcomeEffectEvidenceStatus / GRADE
Patient‐reported pruritus intensity
Serlopitant 0.25 mg vs placebo
RR 1.66 [1, 2.77]1 study · 127 participantsLow
Downgraded: imprecision, indirectness
Adverse events
Serlopitant 0.25 mg vs placebo
RR 1.29 [0.75, 2.24]1 study · 127 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Health‐related quality of life
Serlopitant 0.25 mg vs placebo
no estimate extracted1 study · 127 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Sleep disturbances: number of participants with insomnia
Serlopitant 0.25 mg vs placebo
RR 0.6 [0.31, 1.17]1 study · 127 participantsVery low
Downgraded: risk of bias, imprecision, indirectness
Depression
Serlopitant 0.25 mg vs placebo
no estimate extractedNRNo studies
Patient satisfaction
Serlopitant 0.25 mg vs placebo
no estimate extractedNRNo studies