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Gastrointestinal Stromal TumorsPhase 4NCT04825574

Study for Patients Previously Treated in Avapritinib Clinical Trials

A Phase 4 study testing Avapritinib in people with Gastrointestinal Stromal Tumors, run by Blueprint Medicines Corporation at 1 site in France.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is an open-label extension study to provide long term safety data for GIST patients who are deriving clinical benefit from avapritinib upon the completion of avapritinib clinical trials. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Gastrointestinal Stromal Tumors
What is being tested?
Avapritinib
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
2 participants
Where
1 siteFrance
Study dates
21 May 2021to 23 Nov 2023
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patient has histologically confirmed metastatic or unresectable GIST as established by entry in a previous avapritinib clinical trial and has been receiving treatment with avapritinib on one of these trials.
  • Patient continues to receive clinical benefit from avapritinib treatment, as assessed by the investigator.
  • Patient or legal guardian, if permitted by local regulatory authorities, provides informed consent.

Who cannot join

  • Patient requires therapy with a concomitant medication that is a strong inhibitor or strong inducer of cytochrome P450 (CYP) 3A4
  • Patient has a history of intracranial bleeding either prior to or during avapritinib treatment
  • Patients who have poor organ function, defined as Adverse Events of NCI CTCAE version 5.0 Grade 3 or higher at the time of enrollment must delay start of treatment until symptoms return to Grade 2 or baseline, or the start of treatment has been approved by the Sponsor.
  • Patients who have ongoing cognitive or mood effects Adverse Events of NCI CTCAE version 5.0 higher than Grade 1 must delay start of treatment until symptoms return to Grade 1 or baseline.
  • Women who are unwilling, if not postmenopausal or surgically sterile, to abstain from sexual intercourse or employ highly effective contraception from the time of enrollment and for at least 30 days after the last dose of avapritinib. Men who are unwilling, if not surgically sterile, to abstain from sexual intercourse or employ highly effective contraception from the time of first dose and for at least 90 days after the last dose of avapritinib.
  • Women who are pregnant.
  • Women who are breast feeding.

Trial locations and contacts

1 site in 1 country.

France1 site
  • Gustave Roussy Cancer Campus Grand Paris Institut de Cancerologie Gustave-Roussy

    Villejuif, Val-de-Marne, 94800

Other trials in France

About this study

Official title: Extension Protocol for Patients Previously Treated in Avapritinib Clinical Trials

This is an open-label extension study to provide long term safety data for GIST patients who are deriving clinical benefit from avapritinib upon the completion of avapritinib clinical trials.

Being tested
Avapritinib
Medical subject headings
Gastrointestinal Stromal Tumors

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • AvapritinibDrug

    Also called BLU-285

    avapritinib tablet

Study groups in NCT04825574
Study groupRoleWhat they receive
Patients with GIST previously enrolled in avapritinib clinical trialsExperimentalNot described
Receives: Drug: Avapritinib

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Adverse Events of Special Interest (AESIs)

    AESIs for avapritinib are, regardless of grade or causality:

    • cognitive effects which include the following terms: memory impairment, cognitive disorder, confusional state and encephalopathy.
    • intracranial bleeding including haemorrhage intracranial, cerebral haemorrhage , and subdural haematoma.

    Measured: From date of first avapritinib dose through 30 days after the last avapritinib dose (up to approximately 31 months)

  2. Number of Participants With Serious Adverse Events (SAEs)

    An AE was defined as any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAEs were defined as death, a life-threatening AE, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized participant and required medical intervention to prevent 1 of the outcomes listed in this definition. A summary of all serious AEs, regardless of causality is located in Reported AE section.

    Measured: From date of first avapritinib dose through 30 days after the last avapritinib dose (up to approximately 31 months)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Apr 2021
  2. Study start21 May 2021
  3. Primary completion23 Nov 2023
  4. Study completion23 Nov 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
2 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04825574
Sponsor's protocol ID
BLU-285-1408
Status last verified
Oct 2024
First submitted
29 Mar 2021
Last updated
26 Nov 2024
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Avapritinib in people with Gastrointestinal Stromal Tumors, run by Blueprint Medicines Corporation at 1 site in France.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 26 Nov 2024. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 26 Nov 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Adverse Events of Special Interest (AESIs) (time frame: From date of first avapritinib dose through 30 days after the last avapritinib dose (up to approximately 31 months)). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 26 Nov 2024.

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