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This study evaluates the safety, efficacy and tolerability of the drug BOS172738 in patients with advanced solid tumors carrying a RET gene alteration. Adults aged 18 and older with a documented RET gene alteration (for example RET gene fusion NSCLC or RET gene mutant medullary thyroid cancer) and no other approved treatment options were able to take part. The study was carried out in Phase 1 and has been completed.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria: Participants are eligible to be included in the study only if all of the following criteria apply: * Male or female participants must be ≥ 18 years, at the time of signing the informed consent * Diagnosis of advanced solid tumor with a documented rearranged during transfection (RET) gene altered malignancy as determined locally by a DNA based assay of tumor tissue and/or blood * Participants must have no alternative approved therapy. * For participants in Part B expansion cohort only: documented local diagnosis of either 1) advanced RET gene fusion non-small cell lung cancer (NSCLC); 2) advanced RET gene mutant medullary thyroid cancer (MTC); or 3) other RET gene altered advanced tumors or NSCLC/MTC with prior specific RET gene targeted therapy * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 * Negative pregnancy test for females of child bearing potential; must be surgically sterile, postmenopausal, or willing and able to be compliant with a contraceptive regimen * Contraceptive use by men or women should be consistent with local regulations. * Capable of giving signed informed consent Exclusion Criteria: Participants are excluded from the study if any of the following criteria apply: * Inability to take oral medications or gastrointestinal (GI) conditions that can interfere with the swallowing or absorption of study medication * Uncontrolled or severe concurrent medical condition * History of upper GI bleeding, ulceration, or perforation within 12 months prior to the first dose of study drug * Known history of stroke or cerebrovascular accident within 6 months prior to the first dose of study drug * Participants with known infection with human immunodeficiency virus (HIV) or Acquired Immune Deficiency Syndrome (AIDS) (testing not required) * Participants who are hepatitis B surface antigen positive or participants who are hepatitis C antibody positive (Participants who have been successfully treated for hepatitis C virus \[HCV\] are eligible if an undetectable HCV viral load at least 6 months after completion of treatment can be demonstrated.) * Any evidence of serious active infections * Uncontrolled or severe cardiovascular disease * Uncontrolled intercurrent illness or psychiatric illness/social situations that would limit compliance with study requirements * Participants with a prior or concurrent malignancy other than the malignancies under study * Ongoing cancer directed therapy