Treatment regimen

Dostarlimab with carboplatin-paclitaxel in endometrial cancer (RUBY)

First line in advanced or recurrent endometrial cancer; greatest benefit in dMMR

Updated: 28 October 20261 min read2 references

Summary for doctors

  • Stage 3 to 4 or recurrent endometrial cancer, first line [1].
  • In dMMR/MSI-H, 2-year progression-free survival rose from 16% to 61% [1].

Dose and schedule

RUBY

Advanced or recurrent endometrial cancer

Advanced or recurrent endometrial cancer

DrugDoseRouteSchedule
Phase 1: 6 cycles
Dostarlimab500 mgIVDay 1
CarboplatinAUC 5IVDay 1
Paclitaxel175 mg/m²IVDay 1
Phase 2
Dostarlimab1000 mgIVEvery 6 weeks
Cycle length
Chemotherapy every 21 days; maintenance every 6 weeks
Duration
Dostarlimab up to 3 years

As in RUBY [1].

Dose source: [2].

Evidence: RUBY (ENGOT-EN6/GOG-3031) (2023)

Doses follow the trial protocol, guideline or official drug label (source given in the notes of each regimen). Before prescribing, check blood counts, renal and hepatic function, drug interactions and the patient’s condition, and adjust the dose according to the drug label.

Premedication and supportive care

Monitoring and dose adjustment

Main evidence

Show detailsHide

RUBY: in all patients, 2-year progression-free survival 36.1% vs 18.1%, and in dMMR/MSI-H 61.4% vs 15.7% [1].

Related cancer types

References

2 references
Show all references, 1 with a study cardClose the reference list

Numbers in the text, such as [1], refer to these sources. Sources with a “Study card” button are summarised in the site’s evidence library.

  1. 1
    Dostarlimab for Primary Advanced or Recurrent Endometrial CancerMirza MR, Chase DM, Slomovitz BM, et al · N Engl J Med · 2023;388:2145-2158
    Study cardDOIPubMed Back to text: 1 2 3 4
  2. 2
    JEMPERLI (DOSTARLIMAB) — Prescribing InformationGlaxosmithkline LLC · FDA label · 2026

This page is based on reputable scientific sources and was last updated on 28 October 2026. The content of this website is for educational and informational purposes only and does not replace consultation, diagnosis or treatment by a specialist physician. Consult your treating physician about any treatment decision.