Alpha Tau Medical Ltd. filings document the company's foreign-issuer current reports for Alpha DaRT clinical and regulatory updates. Recent Form 6-K reports furnish press releases and presentations covering studies in recurrent glioblastoma, recurrent cutaneous squamous cell carcinoma, pancreatic cancer, and head and neck cancer.
The filings describe trial enrollment, interim clinical data, safety observations, FDA device-related matters, conference presentations and company presentations furnished as exhibits. They also identify the company's Form 20-F reporting status and the treatment of furnished information under the Securities Exchange Act.
Alpha Tau Medical Ltd. furnished a presentation on interim clinical data from its U.S. REGAIN trial of Alpha DaRT in patients with recurrent glioblastoma. The pilot study plans to enroll 10 patients, with feasibility and safety as primary endpoints.
Three patients have been treated so far. All showed tumor responses: two achieved complete responses with no discernable lesion on MRI, and one had stable disease with a 30% tumor size reduction at one month. One patient is reported as having no evidence of disease.
Adverse events included grade 2–3 seizures in two patients, managed with steroids and brief hospitalization, with all returning to neurologic baseline. No unanticipated side effects or dose-limiting toxicities were observed in this interim analysis, and further enrollment is planned pending FDA review of the initial safety data.
Alpha Tau Medical reported highly encouraging interim results from its U.S. REGAIN trial of Alpha DaRT for recurrent glioblastoma, an aggressive brain cancer. The first three treated patients showed 100% local disease control, with two achieving complete response and the third showing stable disease with a 30% tumor reduction per RANO criteria. As of May 3, 2026, no local or distant recurrence or residual procedure-related symptoms were seen, and only one associated grade 3 serious adverse event, a seizure with temporary paralysis, occurred and resolved with steroids. The trial is designed to enroll up to ten U.S. patients to further evaluate feasibility and safety of this investigational therapy.
Alpha Tau Medical Ltd. is hosting a conference call and webcast on May 11, 2026 at 8:30am ET to discuss interim clinical data from the first three patients treated in its U.S. REGAIN trial for recurrent glioblastoma. The REGAIN study is a feasibility and safety trial expected to enroll up to ten U.S. patients with recurrent glioblastoma that cannot be surgically removed and have previously received central nervous system radiation. Alpha Tau develops Alpha DaRT, which delivers radium‑224 directly into solid tumors so its short‑lived decay products emit high‑energy alpha particles aimed at destroying tumor tissue while sparing nearby healthy tissue.
Alpha Tau Medical Ltd. has completed enrollment of 88 patients in its ReSTART pivotal trial, a multicenter U.S.-led study of Alpha DaRT for recurrent cutaneous squamous cell carcinoma. This first U.S. pivotal study to fully enroll supports Alpha Tau’s modular FDA pre-market approval application, following Breakthrough Device Designation for Alpha DaRT in this indication.
Alpha Tau Medical Ltd. reported a clinical milestone as it successfully treated the first pancreatic cancer patient in Italy with its Alpha DaRT® therapy at the University of Verona’s Pancreas Institute. The procedure is part of a feasibility and safety study (CTP-PANC-03) for locally advanced, unresectable pancreatic cancer.
The single-center trial in Verona plans to enroll up to 15 patients who have confirmed locally advanced pancreatic cancer, tumors of ≤ 5 cm, and have either received at least one line of chemotherapy or are medically unfit for systemic treatment. Alpha DaRT sources can be delivered via endoscopic ultrasound or a percutaneous approach, with a safety interim analysis after the first 5 patients.
The study’s primary objective is to evaluate feasibility and safety of Alpha DaRT source placement, while secondary objectives include local tumor control per RECIST v1.1, changes in CA 19-9 biomarker levels, tumor coverage, and adverse events. Exploratory objectives focus on immune biomarkers, and the company emphasizes this as its first protocol to incorporate the percutaneous delivery route for pancreatic cancer.
Alpha Tau Medical Ltd. reported that an abstract from its clinical trial combining its Alpha DaRT intratumoral alpha-radiation therapy with pembrolizumab in elderly patients with locally advanced and metastatic head and neck squamous cell carcinoma has been accepted for a podium presentation at the AHNS 12th International Conference on Head and Neck Cancer in Boston in July 2026.
The trial, conducted at Hadassah Medical Center in Jerusalem, evaluates Alpha DaRT as an add-on to standard-of-care immunotherapy, aiming to offer a new option for older patients who often cannot tolerate aggressive chemoradiation. Company executives and the lead investigator highlight prior monotherapy safety data and the scientific rationale for combining localized radiotherapy with systemic immunotherapy.
Alpha Tau Medical Ltd. furnished a press release describing updated results from two first-in-human trials of its Alpha DaRT intratumoral alpha-radiation therapy in pancreatic ductal adenocarcinoma. In a pooled analysis, 100% local disease control was achieved in 19 evaluable patients using modified RECIST v1.1 criteria.
Among these patients, 15 (79%) had stable disease and 4 (21%) had partial responses, despite many being heavily pre-treated or ineligible for chemotherapy. Across 26 treated subjects, only 8 device-associated adverse events occurred in 7 patients (27%), almost all resolving within two weeks, indicating a favorable safety profile. The therapy is delivered via an outpatient EUS-guided procedure designed to fit standard gastroenterology workflows.
Alpha Tau Medical Ltd. filed a Form F-3 shelf registration to offer up to $300,000,000 of securities, including ordinary shares, warrants, debt securities, subscription rights and/or units, to be sold from time to time. The base prospectus notes an at-the-market sales agreement permitting up to $100,000,000 of ordinary shares to be sold through H.C. Wainwright & Co.
The prospectus summarizes clinical-stage progress of the company’s Alpha DaRT® localized alpha-radiation therapy, regulatory milestones in Israel, the U.S. Breakthrough Device designations, and recent MHLW approval in Japan with a post-market surveillance requirement. Net proceeds are for general corporate purposes, including R&D and potential commercialization.
Alpha Tau Medical Ltd. is highlighting new pancreatic cancer research based on its Alpha DaRT® radiation therapy. An abstract combining safety and efficacy data from 58 patients across three prospective pancreatic cancer studies in Canada and Israel has been accepted for presentation at the 2026 ASCO Annual Meeting, a major global oncology conference. The pooled analysis covers endoscopic ultrasound-guided intratumoral Alpha DaRT in locally advanced or metastatic pancreatic ductal adenocarcinoma and reflects growing scientific interest in the company’s pancreatic cancer program, alongside ongoing IMPACT and ACAPELLA clinical trials.