At eFFECTOR, our team is relentlessly translating the best science to develop better medicines to treat cancer. An important part of developing and investigating new treatments is conducting clinical trials. We are currently recruiting patients to be part of our clinical trials to test potential new products.

Breast Cancer

The National Cancer Institute estimates there are over 280,000 new cases of invasive breast cancer in the U.S. alone each year. In invasive estrogen receptor (ER)-positive breast cancers (representing approximately 60% of cases), patients are currently treated with endocrine therapy, which impacts estrogen’s effects in cancer cells, and CDK 4/6 inhibitors. However, because the majority of patients eventually progress, there is an immense need for new treatments.

Breast cancers often harbor overexpressed or mutated RTKS  such as HER2 or FGFR, that can be treated with either approved or experimental agents that specifically target those proteins. In preclinical experiments, we have shown that zotatifin downregulates production of proteins within the ER and RTK pathways. We are advancing our product candidate zotatifin in several breast cancer subtypes, including ER+, Her2+ and FGFR+ metastatic breast cancer in combination with targeted agents.

Lung Cancer Illustration

Non-Small Cell Lung Cancer

Zotatifin is also being investigated in KRAS-mutant NSCLC as a single agent in non-G12C patients and in combination with a G12C KRAS inhibitor for patients who are G12C-positive. Activating KRAS mutations occur in approximately 25% of patients with NSCLC, an area in which there is a significant need to improve treatment outcome.

Clinical Trials

At eFFECTOR, our passion is using the best science to develop better medicines to treat cancer. An important part of developing new treatments is conducting clinical trials. eFFECTOR is currently recruiting patients to be part of clinical trials to test potential new products.

A Phase 1-2 Dose-Escalation and Cohort-Expansion Study of Intravenous eFT226 in Subjects With Selected Advanced Solid Tumor Malignancies

Disease: Solid tumors with activating mutation, amplification or fusion of HER2, ERBB3, FGFR1, FGFR2, EGFR or an activating mutation in KRAS, pancreatic adenocarcinoma.
Status: Actively recruiting

Expanded Access Policy

eFFECTOR Therapeutics is driven by science, and we are committed to developing safe and effective therapies for patients. Our goal is to provide our novel treatments to patients as quickly as possible, but in a way that stands up to scientific rigor and achieves the best clinical outcomes.

Our clinical programs are designed to answer important scientific questions about the potential risks and benefits of our product candidates, and to provide data to support regulatory approval. Patients are required to meet specific eligibility criteria to enter our clinical trials, and not every patient will meet eligibility criteria. When a patient does not meet the eligibility criteria for a clinical trial, or if a clinical trial is not available, and the patient has exhausted available treatment options, companies may consider providing access to its investigational medicines outside of a clinical trial through a process called Expanded Access.

eFFECTOR has determined that Expanded Access cannot currently be offered for any of its product candidates and the company does not currently provide its product candidates outside of enrollment in clinical trials.

If you have questions regarding this policy or any of our ongoing clinical trials, please contact: