AbbVie Announces Positive Topline Results from Phase 2 Trial Evaluating Elahere for High Folate Receptor-Alpha Expressing Platinum-Sensitive Ovarian Cancer

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NORTH CHICAGO, Ill., June 6, 2024. AbbVie announced today positive topline results from the Phase 2 PICCOLO trial evaluating investigational mirvetuximab soravtansine (ELAHERE) monotherapy in heavily pre-treated patients with folate receptor-alpha (FRα) positive, platinum-sensitive ovarian cancer (PSOC). The study met its primary endpoint with an objective response rate (ORR) of 51.9% (95%CI 40.4 – 63.3%).

In addition, the median duration of response (DOR), a key secondary endpoint, was 8.25 months.

The safety profile of mirvetuximab soravtansine was consistent with findings from previous studies, and no new safety concerns were identified. Full data from the PICCOLO study will be presented at a future medical meeting.

"Significant unmet needs remain for patients with platinum sensitive disease, as each subsequent line of therapy in this setting is associated with decreased efficacy and tolerability, which reinforces the need for treatment alternatives for these patients," said Angeles Alvarez Secord, M.D., M.H.Sc., from the Duke Cancer Institute. "The PICCOLO data further support the potential of mirvetuximab soravtansine for platinum-sensitive ovarian cancer patients."

About PICCOLO

PICCOLO is a single arm Phase 2 trial evaluating the efficacy and safety of mirvetuximab soravtansine monotherapy in patients with FR-alpha high platinum-sensitive ovarian cancer who have received at least two prior lines of platinum containing therapy or have a documented platinum allergy. The primary end point is objective response rate (ORR), and the key secondary endpoint is duration of response (DOR).

The PICCOLO study was designed to statistically rule out an objective response rate of 28% or lower, as excluded by the lower bound of the confidence interval, a response rate which has been observed with non-platinum, single-agent chemotherapy in platinum-sensitive disease. Patients with PSOC with multiple prior lines of platinum-based therapy or who are ineligible for platinum-based therapy, as in the population in PICCOLO, have no established benchmark standard of care, particularly after disease progression on a PARP inhibitor.

Mirvetuximab soravtansine is also being studied in PSOC in the Phase 3 GLORIOSA trial, in combination with bevacizumab versus bevacizumab alone in maintenance after second-line platinum-doublet therapy.

About Ovarian Cancer

Ovarian cancer is the leading cause of death from gynecological cancers in the United States. Each year, approximately 20,000 patients are diagnosed. Most patients present with late-stage disease and will typically undergo surgery followed by platinum-based chemotherapy. Unfortunately, the majority of patients will experience recurrence of their disease and require multiple subsequent lines of therapy, with decreasing efficacy and tolerability. Patients who initially respond to platinum-based chemotherapy and relapse 6 months or longer after the initial treatment were classified as platinum sensitive, while patients who relapse within under 6 months after platinum-based chemotherapy were considered platinum resistant.

Platinum-based chemotherapy remains the most active treatment for earlier lines of ovarian cancer. The benefit of retreatment with platinum is generally less with each subsequent line of therapy. While platinum-based doublets predominate treatment for front- and second-line patients based on results from randomized trials, there is no generally accepted standard of care with a clear efficacy benchmark based on prospective trials in third-line or later patients, particularly those whose cancers have progressed on PARP inhibitors.

About Mirvetuximab Soravtansine

Mirvetuximab soravtansine is a first-in-class ADC comprising a folate receptor alpha-binding antibody, cleavable linker, and the maytansinoid payload DM4, a potent tubulin inhibitor designed to kill the targeted cancer cells.

Mirvetuximab soravtansine approved under the brand name ELAHERE® in the United States has received regulatory approval in adults with folate receptor-alpha (FRα) positive, platinum-resistant epithelial ovarian, fallopian tube, or primary peritoneal cancer, who have received one to three prior systemic treatment regimens. Select patients for therapy based on an FDA-approved test. The Marketing Authorization Application (MAA) for ELAHERE in Europe has been accepted by the European Medicines Agency (EMA). Regulatory submissions for ELAHERE are also under review in multiple other countries. The safety and efficacy of mirvetuximab soravtansine has not been established for platinum-sensitive ovarian cancer.

About AbbVie in OncologyAt AbbVie, we are committed to transforming standards of care for patients living with difficult-to-treat cancers. We are advancing a dynamic pipeline of investigational therapies across a range of cancer types in both blood cancers and solid tumors. We are focusing on creating targeted medicines that either impede the reproduction of cancer cells or enable their elimination. We achieve this through various, targeted treatment modalities including Antibody Drug Conjugates (ADCs), Immuno-Oncology, bi-specific antibody and CAR-T platforms. Our dedicated and experienced team joins forces with innovative partners to accelerate the delivery of potential breakthrough medicines.

Today, our expansive oncology portfolio comprises of approved and investigational treatments for a wide range of blood and solid tumors. We are evaluating more than 20 investigational medicines in multiple clinical trials across some of the world's most widespread and debilitating cancers. As we work to have a remarkable impact on people's lives, we are committed to exploring solutions to help patients obtain access to our cancer medicines. For more information, please visit http://www.abbvie.com/oncology.

About AbbVieAbbVie's mission is to discover and deliver innovative medicines and solutions that solve serious health issues today and address the medical challenges of tomorrow. We strive to have a remarkable impact on people's lives across several key therapeutic areas – immunology, oncology, neuroscience, and eye care – and products and services in our Allergan Aesthetics portfolio. For more information about AbbVie, please visit us at www.abbvie.com. Follow @abbvie on LinkedIn, Facebook, Instagram, X (formerly Twitter), and YouTube.

Forward-Looking StatementsSome statements in this news release are, or may be considered, forward-looking statements for purposes of the Private Securities Litigation Reform Act of 1995. The words "believe," "expect," "anticipate," "project" and similar expressions and uses of future or conditional verbs, generally identify forward-looking statements. AbbVie cautions that these forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially from those expressed or implied in the forward-looking statements. Such risks and uncertainties include, but are not limited to, challenges to intellectual property, competition from other products, difficulties inherent in the research and development process, adverse litigation or government action, and changes to laws and regulations applicable to our industry. Additional information about the economic, competitive, governmental, technological and other factors that may affect AbbVie's operations is set forth in Item 1A, "Risk Factors," of AbbVie's 2022 Annual Report on Form 10-K, which has been filed with the Securities and Exchange Commission, as updated by its subsequent Quarterly Reports on Form 10-Q. AbbVie undertakes no obligation, and specifically declines, to release publicly any revisions to forward-looking statements as a result of subsequent events or developments, except as required by law.

SOURCE AbbVie

Posted : 2024-06-11 16:48

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