A Phase 1 interventional study of MRTX1719 in Mesothelioma, Non Small Cell Lung Cancer and Malignant Peripheral Nerve Sheath Tumors, sponsored by Bristol-Myers Squibb. Recruiting at 25 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-02.
Sponsored by Bristol-Myers Squibb · Phase 1, Interventional, and Treatment
This is a Phase 1, open-label, multicenter, study of the safety, tolerability, PK, PD, and anti-tumor activity of MRTX1719 patients with advanced, unresectable or metastatic solid tumor malignancy with homozygous deletion of the MTAP gene.
This first-in-human clinical trial will begin with an exploration of MRTX1719 dose and regimen. As potentially viable regimens are identified, Phase 1b expansion cohorts may be implemented to ensure sufficient safety experience, PK information, compare food effect and relative bioavailability between capsules and tablets, and early evidence of clinical activity are available.
305 studies on the registry are indexed under Mesothelioma; 61 are open to participants now.
This study's planned enrollment of 336 is above the median of 48 across 250 interventional studies indexed under Mesothelioma.
Browse Mesothelioma studies →Bristol-Myers Squibb is the lead sponsor of 1,561 studies on the registry; 117 are open to participants now.
Of its 436 completed or terminated interventional studies of FDA-regulated products, 228 (52%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).
Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Biopsy and archival tissue
A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.
Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Brain metastases
Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).
Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Dose Escalation/Evaluation
Drug: MRTX1719
Drug: MRTX1719
Drug: MRTX1719
MRTX1719 is a potent PRMT5-MTA inhibitor. Specified dose on specified days
Number of Patients who Experience Dose-Limiting Toxicity
Time frame: 21 days
Number of patients who experience a treatment-related adverse event
Time frame: Up to 2 years
Objective response rate (ORR)
Time frame: 2 years
Duration of response (DOR)
Time frame: 2 years
Progression free survival (PFS)
Time frame: 2 years
Overall survival (OS)
Time frame: 2 years
Number of Patients With Clinically Significant Laboratory Assessments
Time frame: Up to 4 years
Area under the plasma concentration versus time curve (AUC)
Time frame: Up to 4 days
Time to achieve maximal plasma concentration (Tmax)
Time frame: Up to 4 days
Maximum observed plasma concentration (Cmax)
Time frame: Up to 4 days
Terminal elimination half-life (t1/2)
Time frame: Up to 4 days
Apparent total plasma clearance when dosed orally (CL/F)
Time frame: Up to 4 days
Apparent volume of distribution when dosed orally (Vz/F)
Time frame: Up to 4 days
Not enrolling at this site — choose another above.
Not enrolling at this site — choose another above.
Not enrolling at this site — choose another above.
Plan to share: Yes — BMS will provide access to individual anonymized participant data upon request from qualified researchers, and subject to certain criteria. Additional information regarding Bristol Myer Squibb's data sharing policy and process can be found at https://www.bms.com/researchers-and-partners/clinical-trials-and-research.html
Supporting information: Study protocol, Statistical analysis plan, Clinical study report
Time frame: See Plan Description
Access criteria: See Plan Description
Data sharing details ↗ · www.bms.com
Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.
Contact study teamGet an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Studies of the drug tested here: Navlimetostat