Testing the Combination of Two Anticancer Drugs M1774 (Tuvusertib) and Avelumab to Evaluate Their Safety and Effectiveness in Treating Merkel Cell Skin Cancer, MATRiX Trial
Public ClinicalTrials.gov record NCT05947500. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Randomized Phase 2 Study of ATR Inhibition in Advanced PD-(L)1-Refractory Merkel Cell Carcinoma: The MATRiX Trial
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This phase II trial compares tuvusertib in combination with avelumab to tuvusertib alone to determine whether the combination therapy will lengthen the time before the cancer starts getting worse in patients with Merkel cell cancer that has not responded to previous treatment (refractory). Tuvusertib is a drug that inhibits an enzyme called ataxia telangiectasia and Rad3 related (ATR) kinase, which is an enzyme that plays a role in repair of damaged deoxyribonucleic acid (DNA) as well as tumor cell replication and survival. It may lead to tumor cell death by inhibiting ATR kinase activity. Immunotherapy with monoclonal antibodies, such as avelumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving tuvusertib in combination with avelumab may lengthen the time before Merkel cell cancer starts getting worse compared to giving avelumab alone.
Study identification
- NCT ID
- NCT05947500
- Recruitment status
- Active, not recruiting
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 50 participants
Conditions and interventions
Conditions
Interventions
- Avelumab Drug
- Biopsy Procedure Procedure
- Biospecimen Collection Procedure
- Computed Tomography Procedure
- Magnetic Resonance Imaging Procedure
- Positron Emission Tomography Procedure
- Tuvusertib Drug
Drug · Procedure
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 21, 2024 (Actual)
- Primary completion
- Jan 1, 2028 (Estimated)
- Completion
- Jan 1, 2028 (Estimated)
- Last update posted
- Jul 31, 2026
2024 – 2028
United States locations
- U.S. sites
- 50
- U.S. states
- 19
- U.S. cities
- 42
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| UCI Health - Chao Family Comprehensive Cancer Center and Ambulatory Care | Irvine | California | 92612 | — |
| UC San Diego Moores Cancer Center | La Jolla | California | 92093 | — |
| Keck Medicine of USC Koreatown | Los Angeles | California | 90020 | — |
| Los Angeles General Medical Center | Los Angeles | California | 90033 | — |
| USC / Norris Comprehensive Cancer Center | Los Angeles | California | 90033 | — |
| USC Norris Oncology/Hematology-Newport Beach | Newport Beach | California | 92663 | — |
| UC Irvine Health/Chao Family Comprehensive Cancer Center | Orange | California | 92868 | — |
| Stanford Cancer Institute Palo Alto | Palo Alto | California | 94304 | — |
| UCHealth University of Colorado Hospital | Aurora | Colorado | 80045 | — |
| Yale University | New Haven | Connecticut | 06520 | — |
| Sibley Memorial Hospital | Washington D.C. | District of Columbia | 20016 | — |
| UM Sylvester Comprehensive Cancer Center at Aventura | Aventura | Florida | 33180 | — |
| UM Sylvester Comprehensive Cancer Center at Coral Gables | Coral Gables | Florida | 33146 | — |
| UM Sylvester Comprehensive Cancer Center at Deerfield Beach | Deerfield Beach | Florida | 33442 | — |
| University of Miami Miller School of Medicine-Sylvester Cancer Center | Miami | Florida | 33136 | — |
| UM Sylvester Comprehensive Cancer Center at Kendall | Miami | Florida | 33176 | — |
| UM Sylvester Comprehensive Cancer Center at Plantation | Plantation | Florida | 33324 | — |
| Moffitt Cancer Center - McKinley Campus | Tampa | Florida | 33612 | — |
| Moffitt Cancer Center | Tampa | Florida | 33612 | — |
| Emory University Hospital/Winship Cancer Institute | Atlanta | Georgia | 30322 | — |
| Northwestern University | Chicago | Illinois | 60611 | — |
| Memorial Hospital East | Shiloh | Illinois | 62269 | — |
| HaysMed | Hays | Kansas | 67601 | — |
| University of Kansas Cancer Center | Kansas City | Kansas | 66160 | — |
| Lawrence Memorial Hospital | Lawrence | Kansas | 66044 | — |
| The University of Kansas Cancer Center - Olathe | Olathe | Kansas | 66061 | — |
| University of Kansas Cancer Center-Overland Park | Overland Park | Kansas | 66210 | — |
| University of Kansas Hospital-Indian Creek Campus | Overland Park | Kansas | 66211 | — |
| Salina Regional Health Center | Salina | Kansas | 67401 | — |
| University of Kansas Health System Saint Francis Campus | Topeka | Kansas | 66606 | — |
| University of Kansas Hospital-Westwood Cancer Center | Westwood | Kansas | 66205 | — |
| Johns Hopkins University/Sidney Kimmel Cancer Center | Baltimore | Maryland | 21287 | — |
| Dana-Farber Cancer Institute | Boston | Massachusetts | 02215 | — |
| Siteman Cancer Center at Saint Peters Hospital | City of Saint Peters | Missouri | 63376 | — |
| Siteman Cancer Center at West County Hospital | Creve Coeur | Missouri | 63141 | — |
| University Health Truman Medical Center | Kansas City | Missouri | 64108 | — |
| University of Kansas Cancer Center - North | Kansas City | Missouri | 64154 | — |
| University of Kansas Cancer Center - Lee's Summit | Lee's Summit | Missouri | 64064 | — |
| Washington University School of Medicine | St Louis | Missouri | 63110 | — |
| Siteman Cancer Center-South County | St Louis | Missouri | 63129 | — |
| Siteman Cancer Center at Christian Hospital | St Louis | Missouri | 63136 | — |
| Laura and Isaac Perlmutter Cancer Center at NYU Langone | New York | New York | 10016 | — |
| Wake Forest University Health Sciences | Winston-Salem | North Carolina | 27157 | — |
| University of Oklahoma Health Sciences Center | Oklahoma City | Oklahoma | 73104 | — |
| UPMC Hillman Cancer Center | Pittsburgh | Pennsylvania | 15232 | — |
| UT Southwestern/Simmons Cancer Center-Dallas | Dallas | Texas | 75390 | — |
| Huntsman Cancer Institute/University of Utah | Salt Lake City | Utah | 84112 | — |
| University of Virginia Cancer Center | Charlottesville | Virginia | 22908 | — |
| VCU Massey Comprehensive Cancer Center | Richmond | Virginia | 23298 | — |
| Fred Hutchinson Cancer Center | Seattle | Washington | 98109 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 1 non-U.S. site.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT05947500, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 31, 2026 · Synced Oct 19, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT05947500 live on ClinicalTrials.gov.