Cochrane · systematic review · CD011395

PARP (Poly ADP‐Ribose Polymerase) inhibitors for locally advanced or metastatic breast cancer

Taylor, AM, Chan, DLok Hang, Tio, M, et al. · Cochrane Database of Systematic Reviews · 2021 · Cochrane Library

Breast CancerAMSTAR 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
4
current version
GRADE rated
4
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 0 · 0%Low 1 · 25%Moderate 1 · 25%High 2 · 50%

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

PARPi‐containing regimen compared to non‐PARPi regimen for locally advanced or metastatic breast cancer

Population: locally advanced or metastatic breast cancer
4 questions
OutcomeEffectEvidenceStatus / GRADE
Overall Survival**
PARPi‐containing regimen vs non‐PARPi regimen
HR 0.84 [0.76, 1]4 studies · 1435 participantsHigh
Progression Free Survival**
PARPi‐containing regimen vs non‐PARPi regimen
HR 0.63 [0.56, 0.71]5 studies · 1474 participantsHigh
Response Rate
PARPi‐containing regimen vs non‐PARPi regimen
RR 1.39 [1.24, 1.54]5 studies · 1185 participantsLow
Downgraded: risk of bias
Grade ≥3 AEs
PARPi‐containing regimen vs non‐PARPi regimen
RR 0.98 [0.91, 1.04]5 studies · 1443 participantsModerate
Downgraded: risk of bias