In the dMMR/MSI-H Endometrial Cancer Subgroup

The RUBY trial had a major efficacy outcome of PFS* with additional efficacy outcomes of OS, ORR, and DOR1,2

RUBY study design infographic
RUBY study design infographic

Randomization was stratified by MMR/MSI status, prior external pelvic radiotherapy, and disease status (recurrent, primary Stage III, or primary Stage IV)

 

*Assessed by the investigator according to RECIST v1.1.2

 

In RUBY, 494 patients underwent randomization to each treatment arm. The safety profile was evaluated in the 241 patients who were randomized to JEMPERLI + CP with primary advanced or recurrent endometrial cancer (EC). The safety data presented on the safety page reflects exposure to JEMPERLI in 52 patients with dMMR/MSI-H primary advanced or recurrent EC.1,2

 

JEMPERLI was administered prior to chemotherapy on Day 1 of each 21-Day cycle. Treatment with JEMPERLI continued until disease progression, unacceptable toxicity, or a maximum of 3 years.1,2

 

AUC=area under the curve; CP=carboplatin-paclitaxel; DOR=duration of response; IV=intravenous; ORR=objective response rate; OS=overall survival; PFS=progression-free survival; Q3W=every 3 weeks; Q6W=every 6 weeks; RECIST=Response Evaluation Criteria in Solid Tumors.

The RUBY trial included patients with broad disease characteristics including those with aggressive histologies2-4

The RUBY trial included patients with broad disease characteristics1,2

Primary FIGO Stage III or Stage IV disease, including patients with more aggressive histologies2-4

RUBY disease characteristics table
RUBY disease characteristics table

First recurrent endometrial cancer with a low potential for cure by radiation therapy or surgery alone or in combination, including those2:

  • Naïve to systemic anticancer therapy
  • Who had received prior neoadjuvant/adjuvant systemic anticancer therapy and who had a recurrence or disease progression ≥6 months after completing treatment (first recurrent)  

All patients in the RUBY trial were anti-PD-1/L1/L2 naïve.5

§Measurable or evaluable by RECIST v1.1.

FIGO=International Federation of Gynaecology and Obstetrics; PD-1=programmed cell death receptor 1; PD-L1/2=programmed cell death receptor ligand 1/2.

The RUBY trial included dMMR/MSI-H endometrial cancer patients with diverse disease characteristics (n=122)1,2,6

RUBY patient baseline characteristics infographic
RUBY patient baseline characteristics infographic

In the dMMR/MSI-H Endometrial Cancer JEMPERLI + CP Arm

Groundbreaking 71% reduction in the risk of progression or death vs CP alone2

Superior PFS With JEMPERLI + CP vs CP Alone in the dMMR/MSI-H Primary Advanced or Recurrent Endometrial Cancer Patient Population (n=122)2

Progression-free survival in dMMR/MSI-H RUBY population line graph
Progression-free survival in dMMR/MSI-H RUBY population line graph

See the JEMPERLI difference

Hazard ratio for risk of progression or death with JEMPERLI + CP vs CP alone (HR=0.29, 95% CI: 0.17, 0.50; P<0.0001#)2

30.3 months median PFS# (95% CI: 11.8, NR) with JEMPERLI + CP compared with 7.7 months (95% CI: 5.6, 9.7) with CP alone2

Overall survival data in the dMMR/MSI-H subgroup were immature with 27% deaths2**

  • HR=0.29 (95% Cl: 0.13, 0.64)
  • OS was a prespecified exploratory analysis in the dMMR/MSI-H subgroup with no planned hypothesis testing, and no conclusions can be drawn from this analysis2
  • OS continues to be evaluated in the dMMR/MSI-H subgroup2

 

Based on stratified Cox regression model.

#One-sided p-value based on stratified log-rank test was statistically significant.

**OS in the dMMR/MSI-H subgroup was not powered to demonstrate statistically significant differences.2,6

Median follow-up time was 25 months.1

CI=confidence interval; CP=carboplatin-paclitaxel; HR=hazard ratio; NR=not reached

In the dMMR/MSI-H Endometrial Cancer JEMPERLI + CP Arm

73.8% objective response rate with JEMPERLI + CP after >2 years of follow-up1,2

RUBY objective response rate graphic
RUBY objective response rate graphic

CP alone:

Patients on CP alone achieved a 62.2% ORR (n=28/45, 95% CI: 46.5, 76.2) with 11.1% CR (n=5/45) and 51.1% PR (n=23/45).2

††Confirmed responses as assessed by investigator according to RECIST v1.1.1

Median follow-up time was 25 months.1

CP=carboplatin-paclitaxel; CR=complete response; PR=partial response.

~1 out of 3 patients who responded achieved a complete response with JEMPERLI + CP (n=11/31)2

In the dMMR/MSI-H Endometrial Cancer JEMPERLI + CP Arm

Duration of response with JEMPERLI + CP after >2 years of follow-up1,2‡‡§§

61.3% (n=19/31) of responders had a DOR >1 year1,2

  • Over half of responders on JEMPERLI + CP had a DOR greater than 1 year compared with 14.3% (n=4/28) of patients on CP alone; 25 months median follow-up time1,2

‡‡Confirmed responses as assessed by investigator according to RECIST v1.1.
§§For patients with a partial or complete response.

Median DOR was not reached at 2 years (95% CI: 3.4, 28.3+) after 25 months median follow-up with JEMPERLI + CP compared with median DOR of 5.4 months (95% CI: 2.7, 27.2+) with CP alone1,2

Estimated probability of remaining in response at 2 years for patients in the dMMR/MSI-H endometrial cancer subgroup6¶¶

RUBY DOR Kaplan Meier (or KM) Curve
RUBY DOR Kaplan Meier (or KM) Curve

¶¶Probability of response estimated from Kaplan-Meier curves with a median follow-up of 25 months.1,6

DOR=duration of response; NR=not reached.

 

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