ClinicalTrials.gg
AvailableNCT07825701Updated Sep 17, 2026

Individual Patient Expanded Access for Velzatinib (GSK6042981) in Patients With Gastrointestinal Stromal Tumours With KIT Mutations

An expanded access record providing Velzatinib (GSK6042981) in Gastrointestinal Neoplasms, sponsored by GlaxoSmithKline. Available. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-17.

Sponsored by GlaxoSmithKline · Expanded access

Study type
Expanded access
Access type
Individual patients
Ages
18 Years and older
Sex
All
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Study summary

Compassionate Use, Individual Patient access to velzatinib (GSK6042981) for eligible patients with Gastrointestinal Stromal Tumours (GIST) who have KIT mutations and at least three prior lines of therapy

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Conditions studied

  • Gastrointestinal Neoplasms

Keywords

  • GIST, Gastrointestinal Stromal Tumor
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In context

Gastrointestinal Neoplasms

696 studies on the registry are indexed under Gastrointestinal Neoplasms; 210 are open to participants now.

Browse Gastrointestinal Neoplasms studies →

Lead sponsor

GlaxoSmithKline is the lead sponsor of 3,650 studies on the registry; 117 are open to participants now.

Of its 265 completed or terminated interventional studies of FDA-regulated products, 241 (91%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All

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.

Specific eligibility criteria must be met for access outside of a clinical trial. These include:

  1. There is no satisfactory alternative treatment for the patient including approved standard of care treatments for their diagnosis of Gastrointestinal Stromal Tumour (GIST)
  2. There is reason to believe that the benefit of the patient using GSK6042981 (IDRX-42) outweighs the risk
  3. Patient does not qualify for other ongoing clinical trials

Additional inclusion and exclusion criteria are detailed below.

Inclusion criteria

Inclusion Criteria:

Patients are eligible to be included in the Programme only if all the following criteria apply:

  1. Patient is diagnosed with Gastrointestinal Stromal Tumour (GIST) and positive for a KIT mutation (in one of exons 9, 11, 13, 17)
  2. Patient has had at least 3
  3. Patient has adequate organ system function
  4. Written can be obtained from the patient or legally authorized representative
  5. Patient is 18 years or older
  6. Required
  7. Female participants of , if not or surgically sterile, must agree to abstain from heterosexual intercourse or use a highly effective form of contraception with their sexual partners during the dosing period and for a period of at least 30 days after the end of treatment.

Male participants with partners of childbearing potential must agree that they will abstain from heterosexual intercourse or use condoms and their partners will use highly effective contraceptive methods during the dosing period until at least 30 days after the last dose of study drug

Exclusion criteria

Exclusion Criteria:

Patients are excluded from the Programme if any of the following criteria apply:

  1. Active uncontrolled infection
  2. Known to GSK6042981 or any of the formulation
  3. Women who are pregnant or currently breastfeeding
  4. >2.5xULN or (for patients with documented liver /tumour infiltration) has an ALT value >5xULN
  5. Total >1.5xULN; patients with Gilbert's syndrome can be included with total bilirubin >1.5xULN as long as direct bilirubin is ≤1.5xULN.
  6. Cirrhosis or current unstable liver or biliary disease per physician assessment defined by the presence of ascites, encephalopathy, coagulopathy, hypoalbuminaemia, oesophageal or gastric varices, persistent jaundice. Note: Stable non-cirrhotic chronic liver disease (including Gilbert's syndrome or asymptomatic gallstones) is acceptable if patient otherwise meets entry criteria).
  7. Patients with will be excluded unless the following conditions are met: for patients who are hepatitis B core antibody positive and hepatitis B surface antigen negative (HbcAb+, HBsAg-), HBV DNA must be undetectable at screening and the patient must be monitored according to standard of care during programme treatment, with antiviral therapy instituted if HBV DNA becomes detectable. For patients who are hepatitis B surface antigen positive (HBsAg+) at screening or within 3 months prior to the first dose of programme treatment, HBV DNA must be undetectable at screening, highly effective antiviral treatment must be initiated at least 4 weeks prior to the first dose of programme treatment and maintained throughout programme treatment, and the patient must be monitored and managed according to standard of care.

    Note: Presence of isolated Hep B surface antibody (HBsAb) indicating previous vaccination will not exclude a patient

  8. Positive antibody test result or positive hepatitis C RNA test result at screening or within 3 months prior to first dose of programme treatment unless the patient can meet the following criteria:

    1. RNA test negative
    2. Successful antiviral treatment (usually 8 weeks duration) is required, followed by a negative HCV RNA test after a of at least 4 weeks.
Terms in these criteria, in plain language(13)

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.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Washout period

A planned gap after a treatment, so that its effects can lessen before the study treatment or a study assessment. Ask the study team and the doctor who prescribed it before changing any medicine.

05

Access details

Study type
Expanded access
Access type
Individual patients

Available treatment

06

Where to request access

No study locations are listed for this record.

07

References and documents

08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 17, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07825701
Lead sponsor
GlaxoSmithKline
Responsible party
Sponsor
First posted
Sep 17, 2026
Last update
Sep 17, 2026

Study contacts

US GSK Clinical Trials Call Center
Contact
GSKClinicalSupportHD@gsk.com
877-379-3718
EU GSK Clinical Trials Call Center
Contact
GSKClinicalSupportHD@gsk.com
+44 (0) 20 89904466
View the source record on ClinicalTrials.gov ↗

Requesting access

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