OnCo
trialsTrialPositive

EMPOWER-Cervical 1 / GOG-3016 / ENGOT-cx9

The first immunotherapy to extend life in recurrent cervical cancer, approved in Europe but declined by the FDA.

OS 12.0 vs 8.5 months (HR 0.69; NEJM 2022), regardless of PD-L1 or histology. EU approval 2022; the FDA issued a complete response letter in January 2022 over inspection issues, and the application was not resubmitted. Largely superseded by first-line chemo-immunotherapy.

Setting
Recurrent cervical cancer after first-line platinum: cemiplimab vs single-agent chemotherapy
Phase
Phase 3
Sponsor
Regeneron / Sanofi
Registry
Headline result
OS 12.0 vs 8.5 months (HR 0.69).
Reported
2021
Enrolled
608

Outcomes

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In plain words
What these results mean for people, not percentages
608 people took part
Overall survivalprimarysurvival endpoint
  • Median 12 vs 8.5 months with Cemiplimab compared with Chemotherapy; about 3.5 months longer for half the group.
  • A median is a midpoint: half the people did better than this and half did worse, so it is not a prediction for any one person.
  • Put another way, the treated group had about 31 percent lower chance of the event at any given time (hazard ratio 0.69, likely range 0.56 to 0.84).
  • Overall survival counts deaths from any cause, so it is the most direct measure of whether a treatment helps people live longer.
  • These results apply to the people the trial enrolled: Recurrent cervical cancer after first-line platinum: cemiplimab vs single-agent chemotherapy. People in a different situation may not see the same effect.

Numbers are from the trial as recorded here; see the source links in the table below. This is orientation, not medical advice: ask your team how closely the trial population matches you.

608 participants enrolled.

Overall survivalprimary
HR 0.69 (0.56–0.84)
Cemiplimab
12 mo
Chemotherapy
8.5 mo
Source
EndpointArmnValueHR (95% CI)pSource
Overall survivalprimaryCemiplimab30412 months0.69 (0.56–0.84)link
Chemotherapy3048.5 months

Connected

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