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The first and only treatment to show superior efficacy vs standard single-agent chemotherapy in FRα-positive* PROC1-3

*FRα positive is defined as ≥75% of viable tumor cells with moderate (2+) and/or strong (3+) membrane staining based on an IHC assay.4
FRα=folate receptor alpha; IHC=immunohistochemistry; PROC=platinum-resistant ovarian cancer.

PFS PFS OS ORR Confirmatory Study Data Confirmatory Study Data Additional Data Confirmatory Study Design Single-Arm Study Data

PFS: ADD THE POTENTIAL FOR MORE PROGRESSION-FREE DAYS WITH ELAHERE1,2

Primary endpoint: PFS with ELAHERE vs chemotherapy (ITT population)1,2

*Risk reduction derived from the hazard ratio (HR: 0.65).1

Two-sided P value based on stratified log-rank test.1

CI=confidence interval; HR=hazard ratio; ITT=intent-to-treat; mPFS=median progression-free survival; PFS=progression-free survival.

OS: ADD THE POSSIBILITY OF MORE TIME WITH ELAHERE2,3

Secondary endpoint: OS with ELAHERE vs standard chemotherapy1,2

Investigators selected the chemotherapy prior to randomization in order to avoid selection bias.

*Risk reduction derived from the hazard ratio (HR: 0.67).1

Two-sided P value based on stratified log-rank test.1

mOS=median overall survival; OS=overall survival.

ORR: ADD THE OPPORTUNITY FOR A 2.5X GREATER RESPONSE RATE WITH ELAHERE1

Secondary endpoint: ORR1,2

*N values are based on the number of patients with measurable disease at baseline.

Two-sided P value is based on the stratified Cochran-Mantel-Haenszel (CMH) test.1,2

Other secondary endpoints

  • Median DOR: 6.77 months (n=96; 95% CI: 5.62, 8.31) with ELAHERE vs 4.47 months (n=36; 95% CI: 4.17, 5.82) with standard chemotherapy; HR: 0.62 (95% CI: 0.40, 0.97)2
  • CA-125 response: 58.0% with ELAHERE (n=105/181; 95% CI: 50.5, 65.3) vs 30.3% with standard chemotherapy (n=47/155; 95% CI: 23.2, 38.2)2‡

This study was not powered to evaluate other secondary endpoints. Data are exploratory and descriptive in nature. No formal inferences can be drawn.

A reduction in CA-125 levels of ≥50% from baseline, confirmed and maintained for at least 28 days.6

CA-125=cancer antigen 125; CR=complete response; DOR=duration of response; ORR=overall response rate; PR=partial response.

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  1. ELAHERE. Package insert. AbbVie; 2025.
  2. Moore KN, Angelergues A, Konecny GE, et al. N Engl J Med. 2023;389(23):2162-2174. doi:10.1056/NEJMoa2309169
  3. Matulonis UA, Lorusso D, Oaknin A, et al. J Clin Oncol. 2023;41(13):2436-2445. doi:10.1200/JCO.22.01900
  4. VENTANA FOLR1 (FOLR1-2.1) RxDx Assay. Package insert. Roche; 2022.
  5. Coffman L, You B, Hamilton E, et al. Phase 3 MIRASOL trial: updated overall survival results of mirvetuximab soravtansine (MIRV) versus investigator's choice (IC) chemotherapy in patients (pts) with platinum-resistant ovarian cancer (PROC) and high folate receptor-alpha (FRα) expression. Poster presented at: European Society for Medical Oncology Congress; September 13-17, 2024; Barcelona, Spain.
  6. Data on file, AbbVie Inc. ABVRRTI80484.