Idera Pharmaceuticals Announces Results From ILLUMINATE-301 Trial of Tilsotolimod + Ipilimumab in anti-PD-1 Refractory Advanced Melanoma
ILLUMINATE-301 is a randomized, global, multi-center, open label Phase 3 trial comparing the efficacy of 8 mg intratumoral tilsotolimod in combination with 3 mg/kg ipilimumab versus 3 mg/kg ipilimumab alone in 481 patients with anti-PD-1 refractory advanced melanoma. The trial has a primary endpoint family of ORR per RECIST v1.1 and OS. Although the primary endpoint of ORR was not met, if the study continues and reaches a positive OS outcome, the Company would expect to discuss with regulatory authorities a potential path forward in this indication.
ILLUMINATE-301 Key Findings:
Patients in the study were randomized and treated either with 8 mg of tilsotolimod in combination with ipilimumab or with ipilimumab alone. Topline results include:
- ORR of 8.8% for the combination arm and 8.6% for ipilimumab alone.
- Disease control rate (DCR, defined as stable disease or better) of 34.5% for the combination and 27.2% for ipilimumab alone.
- Treatment-emergent adverse events (TEAEs) (Grade 3 and above) occurred in 61.1% of patients who received the combination vs. 55.1% of patients who received ipilimumab alone. Immune-related TEAEs (Grade 3 and above) were reported in 37.6% vs. 30.1%, respectively.
More detailed results from ILLUMINATE-301 may be submitted for future publication or presentation.
“We are surprised and disappointed that the response data from ILLUMINATE-301 do not lead us to an accelerated path to a new and much-needed treatment option for these patients,” stated
About Tilsotolimod (IMO-2125)
Tilsotolimod is an investigational, synthetic Toll-like receptor 9 agonist. Intratumoral injection of tilsotolimod has been shown to promote both innate (Type-I IFN, antigen presentation) and adaptive (T cells) immune activation. Tumors with an active immune response appear to respond better to checkpoint inhibitors (CPIs) than those that exclude or inhibit anti-tumor immune cells. Tilsotolimod in combination with CPIs may increase the number of patients who benefit from immunotherapy.
Tilsotolimod has received both Fast Track designation and Orphan Drug designation from the FDA and is being evaluated in multiple tumor types and in combination with multiple checkpoint inhibitors. For more information on tilsotolimod trials, please visit www.clinicaltrials.gov.
About Anti-PD-1 Refractory Advanced Melanoma
Melanoma is a cancer that begins in a type of skin cell called melanocytes. While melanoma is the least common type of skin cancer, it has a poor prognosis when not detected and treated early. As is the case in many forms of cancer, melanoma becomes more difficult to treat once the disease has spread, or metastasized, beyond the skin to other parts of the body. According to the
Colorectal cancer involves the abnormal growth of cells in the colon or rectum. This type of cancer is typically tested to determine its “MSI” status, which will inform treatment approach and prognosis. MSI stands for “microsatellite instable.” MSI-High (MSI-H) means that there is a high amount of instability in a tumor, whereas MSS tumors are “microsatellite stable.” The
Harnessing the approach of the earliest researchers in immunotherapy and the company’s vast experience in developing proprietary immunology platforms, Idera’s development program is focused on priming the immune system to play a more powerful role in fighting cancer, ultimately increasing the number of people who can benefit from immunotherapy. Idera also continues to focus on the acquisition, development, and ultimate commercialization of drug candidates for both oncology and rare disease indications characterized by small, well-defined patient populations with serious unmet needs. To learn more about Idera, visit www.iderapharma.com.
This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements, other than statements of historical fact, included or incorporated in this press release, including statements regarding the Company's strategy, future operations, collaborations, intellectual property, cash resources, financial position, future revenues, projected costs, prospects, clinical trials and related endpoints, plans, and objectives of management, are forward-looking statements. The words "believes," "anticipates," "estimates," "plans," "expects," "intends," "may," "could," "should," "potential," "likely," "projects," "continue," "will," and "would" and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Idera cannot guarantee that it will actually achieve the plans, intentions or expectations disclosed in its forward-looking statements and you should not place undue reliance on the Company's forward-looking statements. There are a number of important factors that could cause Idera's actual results to differ materially from those indicated or implied by its forward-looking statements. Factors that may cause such a difference include: whether the Company’s cash resources will be sufficient to fund the Company’s continuing operations and further development of the Company’s programs for the period anticipated; whether topline results from a clinical trial, such as the results reported in this release, will be predictive of the final results of the trial; whether results obtained in preclinical studies and clinical trials such as the results described in this release will be indicative of the results that will be generated in future clinical trials, including in clinical trials in different disease indications; whether products based on Idera's technology will advance into or through the clinical trial process when anticipated or at all or warrant submission for regulatory approval; whether such products will receive approval from the
Idera Pharmaceuticals Contacts:
Jill ConwellInvestor Relations & Corporate Communications Phone (484) 348-1675 JConwell@IderaPharma.com John J. KirbyChief Financial Officer Phone (484) 348-1627 JKirby@IderaPharma.com
Source: Idera Pharmaceuticals, Inc.