๐Ÿ›๏ธ Verified NIH Record โ€ข Updated 2026-02-10

Niraparib, Temozolomide and Atezolizumab in Treating Patients With Advanced Solid Tumors and Extensive-Stage Small Cell Lung Cancer With a Complete or Partial Response to Platinum-Based First-Line Chemotherapy (NCT03830918)

An Open-Label Phase 1b Dose-Finding Trial Evaluating the Safety of Niraparib and Temozolomide and Atezolizumab in Participants With Advanced Solid Tumors and Expansion to a Phase 2 Trial Comparing the Effects of Niraparib and Temozolomide Plus Atezolizumab vs. Atezolizumab as Maintenance Therapy in Participants With Extensive-Stage Small Cell Lung Cancer With a Complete or Partial Response to Platinum-Based First-Line Chemotherapy (TRIO-US L-06)

๐Ÿ”ต Active, Not Recruiting Phase1 / Phase2 ๐Ÿ’Š Investigational Drug / Biologic Sponsor: Jonsson Comprehensive Cancer Center

๐Ÿฉบ Plain-English Summary (8th-Grade Level)

This phase Ib/II trial studies the best dose of temozolomide and how well it works with niraparib and atezolizumab in treating patients with solid tumors that have spread to other places in the body (advanced) and extensive-stage small cell lung cancer with a complete or partial response to platinum-based first-line chemotherapy. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Niraparib is an inhibitor of PARP, an enzyme that helps repair deoxyribonucleic acid (DNA) when it becomes damaged. Blocking PARP may help keep cancer cells from repairing their damaged DNA, causing them to die. PARP inhibitors are a type of targeted therapy. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving temozolomide, niraparib and atezolizumab may work better in treating patients with advanced solid tumors and extensive-stage small cell lung cancer.

Who can join: Review the eligibility criteria below.

Location: UCLA / Jonsson Comprehensive Cancer Center โ€” Los Angeles, California

Age range: 18 Years

๐Ÿงช Interventions in This Study

๐Ÿ“‹ "Do I Qualify?" โ€” 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria โ†—

๐Ÿ“ All Participating Trial Locations (1 Sites)

  • UCLA / Jonsson Comprehensive Cancer Center โ€” Los Angeles, California

๐Ÿ’ฐ Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA ยง 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

๐Ÿ’ก How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Review the official NIH record below to find the coordinating site.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
๐Ÿ›๏ธ View Official NIH Record โ†—