Study of NMS-03305293 in Adult Patient With Relapsed Small Cell Lung Cancer
Study of NMS-03305293, a Non-Trapping PARP1-Specific PARP Inhibitor in Relapsed Small Cell Lung Cancer
1 other identifier
interventional
10
1 country
2
Brief Summary
This is an open-label study of NMS-03305293 with Temozolomide (TMZ) in patients with Small Cell Lung Cancer (SCLC). The aim of this study is to determine the safety and tolerability, as well as to evaluate the anti-tumor efficacy and pharmacokinetics of NMS-03305293 in combination with TMZ.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for phase_1
Started Aug 2025
2 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 4, 2025
CompletedFirst Posted
Study publicly available on registry
April 17, 2025
CompletedStudy Start
First participant enrolled
August 15, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
October 30, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
February 28, 2027
November 12, 2025
November 1, 2025
1.2 years
April 4, 2025
November 11, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Number of Participants with Adverse Events (AEs)
Evaluation of type, frequency, severity (graded using the National Cancer Institute Common Terminology Criteria for Adverse Events \[NCI CTCAE\] Version 5.0), duration of AEs, electrocardiogram (ECG) and laboratory abnormalities
Screening (Day ≤28) up to 28-day follow-up after end of treatment (Approximately 12 months)
Secondary Outcomes (16)
Overall Response Rate (ORR)
From the date of first response up to data cut-off (approximately 12 months)
Duration of response (DoR)
From the date of first response up to data cut-off (approximately 12 months)
Progression-free survival (PFS)
From the date of treatment initiation up to data cut-off (approximately 12 months)
Overall survival (OS)
From the date of treatment initiation up to data cut-off (approximately 12 months)
Maximum plasma concentration (Cmax) of NMS-03305293
Cycle 1 - Day 1 and Day 5. Each cycle is 28 days
- +11 more secondary outcomes
Study Arms (1)
NMS-03305293 and Temozolomide
EXPERIMENTALNMS-03305293 will be dosed orally on days 1-28 of each 28-day cycle, at 100 mg twice daily. Temozolomide will be dosed orally on days 1-5 of each 28-day cycle, at 150 mg/m\^2, based on patients' body surface area.
Interventions
Route of administration: Oral Commercially available Temozolomide
Eligibility Criteria
You may qualify if:
- Histologically confirmed extensive-stage Small Cell Lung Cancer (SCLC); must have failed prior front-line platinum-based therapy including immune therapy with relapse within 6 months followed by failed tarlatamab therapy, if available and appropriate, and no more than 3 total prior lines of systemic therapy (therapy terminated due to toxicity or drug shortage, in the absence of Response Evaluation Criteria In Solid Tumors (RECIST) v1.1 progression, will be considered part of the same line). Sponsor may opt to allow history of treatment free interval from front-line longer than 6 months .
- Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2.
- Patient must have progressed radiographically on or after their most recent line of anticancer therapy and have measurable disease as defined by RECIST v1.1 (radiologically measured by the Investigator).
- The interval from prior antitumor treatment should be at least 2 weeks or 5 half-lives, whichever longer.
- All acute toxic effects (excluding alopecia) of any prior therapy must have resolved to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) version 5.0 Grade ≤ 1 or to the baseline laboratory values as defined in the protocol.
- Patients must use highly effective contraception or true abstinence.
- Ability to swallow capsules intact (without chewing, crushing, or opening).
You may not qualify if:
- Current enrollment in another interventional clinical trial.
- Current treatment with other anticancer agents or devices.
- Major surgery, other than surgery for recurrent SCLC, within 4 weeks prior to treatment start.
- Patients with prior wide-field radiotherapy (RT) affecting at least 20 percent of the bone marrow.
- Histologically transformed SCLC, i.e. tumors initially diagnosed as Non-Small Cell Lung Cancer (NSCLC) or mixed lung adenocarcinoma
- Known paraneoplastic syndrome uncontrolled or that required therapeutic changes (either new/acute or chronic) in the 14 days prior to study entry
- Use of full-dose anticoagulants unless the International Normalized Ratio (INR) or a Partial Thromboplastin Time (PTT) is within therapeutic limits (according to the medical standard in the institution) and the patient has been on a stable dose of anticoagulants for at least 2 weeks before enrollment.
- Treatment with concomitant medications known to be sensitive substrates of CYP2D6 and CYP2C19 that cannot be replaced with another treatment.
- Treatment with systemic immune modulators such as corticosteroids at prednisone equivalent dose of \> 10 mg/day, cyclosporine and tacrolimus or radiotherapy within 28 days before treatment start.
- Breast-feeding women or women planning to breast feed during the study or within 3 months after study treatment.
- Known hypersensitivity to any component of NMS-03305293 or Temozolomide (TMZ) drug formulations.
- Known active, life-threatening or clinically significant uncontrolled systemic infection (bacterial, fungal, viral including Human Immunodeficiency Virus \[HIV\] positivity or Hepatitis B Virus \[HBV\] or Hepatitis B Virus \[HCV\] infections) requiring systemic treatment; HIV or Acquired Immune Deficiency Syndrome (AIDS)-related illness are allowed as long as controlled more than 6 months to undetectable on anti-HIV medications.
- Patients with QT interval using Fridericia standard (QTcF) interval \>450 milliseconds or with risk factors for torsade de pointes (e.g., uncontrolled heart failure, uncontrolled hypokalemia, history of prolonged QTc interval or family history of long QT syndrome). For patients receiving treatment with concomitant medications known to prolong the QTc interval, replacement with another treatment prior to enrollment is mandatory. If concomitant use of anti-emetics is considered essential for the care of the patients, follow instruction in this protocol
- Known active gastrointestinal disease (e.g., documented gastrointestinal ulcer, Crohn's disease, ulcerative colitis, or short gut syndrome) or other malabsorption syndromes or structural issues or ulcer that would impact on drug absorption.
- Any of the following in the previous 6 months: myocardial infarction, unstable angina, coronary/peripheral artery bypass graft, symptomatic congestive heart failure, cerebrovascular accident or transient ischemic attack, pulmonary embolism, deep vein thrombosis, active bleeding disorder and interstitial lung disease.
- +4 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (2)
Massachusetts General Hospital
Boston, Massachusetts, 02114, United States
Tennessee Oncology, PLLC
Nashville, Tennessee, 37203, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 4, 2025
First Posted
April 17, 2025
Study Start
August 15, 2025
Primary Completion (Estimated)
October 30, 2026
Study Completion (Estimated)
February 28, 2027
Last Updated
November 12, 2025
Record last verified: 2025-11