Gastrointestinal NeoplasmNCT00640692
Kinase Genotyping of Gastro Intestinal Stomach Tumors (GISTs) From Patients Enrolled in Pfizer A6181112 Phase IIIb Trial
An observational study of Gastrointestinal Neoplasm, run by Oregon Health and Science University.
Trial summary
The purpose of this study is to determine the genetic makeup of gastro intestinal stomach tumors (GISTs) from patients enrolled in the A6181112 phase IIIb trial. Tumor samples will be screened for mutations and this information will be used to determine whether the progression-free survival of patients being treated… Read more about this study
- Who is it for?
- Ages 18 to 80 years
- Conditions the study is for
- Gastrointestinal Neoplasm
- How many people
- 0 participants
- Where
- No sites listed yet
- Study dates
- Dec 2007to Apr 2011
- Phase
- Observational
- Are there results?
- None posted in the registry
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 to 80 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients enrolled in Pfizer A6181112
Who may be able to join
- Patients enrolled in Pfizer A6181112
Who cannot join
- Patients who do not consent for analysis of their tumor in this companion study
About this study
Official title: Kinase Genotyping of Gastrointestinal Stromal Tumors (GIST) From Patients Enrolled in the A6181112 Phase IIIb Trial at Participating U.S. and Ex-U.S. Medical Centers
The purpose of this study is to determine the genetic makeup of gastro intestinal stomach tumors (GISTs) from patients enrolled in the A6181112 phase IIIb trial. Tumor samples will be screened for mutations and this information will be used to determine whether the progression-free survival of patients being treated with the cancer medication sunitinib is related to the underlying genotype of their GIST.
Read the detailed description
In this companion study, we will analyze the genomic DNA from the GIST tumor specimens of patients enrolled in the in the A6181112 phase IIIb trial at participating U.S. and ex-U.S. medical centers. Specifically, GIST samples will be screened for mutations in KIT gene exons 9, 11, 13 and 17, and PDGFRA gene exons 12, 14 and 18, to determine the primary kinase genotype. Subset analyses will be performed and compared with the overall PFS rates observed in patients with primary and secondary imatinib resistance. Based on data from a previous phase I/II trial, our hypothesis is that patients with either primary or secondary imatinib resistance having a KIT exon 9-mutant or WT GIST will have a longer PFS when treated with sunitinib than patients with exon 11-mutant GIST. We further hypothesize that this difference will be observed among patients treated with high-dose imatinib.
- Conditions
- Gastrointestinal Neoplasm
- Keywords
- Gastrointestinal stromal tumor, GIST, Sunitinib, Imatinib
- Medical subject headings
- Gastrointestinal Neoplasms, Gastrointestinal Stromal Tumors
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| 1 | Not described | |
| 2 | Not described |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted21 Mar 2008 (estimated)
- Study startDec 2007
- Primary completionSep 2009 (estimated)
- Study completionApr 2011 (estimated)
Why it stopped: Insufficient enrollment
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Gastrointestinal NeoplasmStudies of the same condition, open and under way.
- More trials run by Oregon Health and Science UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 0 participants (actual)
Sponsor and investigators
- Lead sponsor
- Oregon Health and Science University
- Sponsor type
- University, hospital or other
- Collaborators
- Pfizer
- Responsible party
- Sponsor
- Investigators
- Christopher L Corless, MD, PhD, Principal investigator, Oregon Health and Science University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00640692
- Sponsor's protocol ID
- Pfizer GIST Genotyping Study
- Status last verified
- Oct 2019
- First submitted
- 18 Mar 2008
- Last updated
- 4 Nov 2019
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 4 Nov 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Kinase Genotyping of Gastrointestinal Stromal Tumors (GIST) From Patients Enrolled in the A6181112 Phase IIIb Trial at Participating U.S. and Ex-U.S. Medical Centers
- ClinicalTrials.gov ID
- NCT00640692
- Acronym / sponsor ID
- Pfizer GIST Genotyping Study
- Conditions
- Gastrointestinal Neoplasm
- Keywords
- Gastrointestinal stromal tumor, GIST, Sunitinib, Imatinib
- Study type
- Observational
- Recruitment status
- WithdrawnReason stopped: Insufficient enrollment
- Enrolment
- 0 participants (actual)
- Lead sponsor
- Oregon Health and Science UniversityUniversity, hospital or other
- Collaborators
- Pfizer
- Study start
- Dec 2007
- Primary completion
- Sep 2009 (estimated)
- Study completion
- Apr 2011 (estimated)
- First posted
- 21 Mar 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to determine the genetic makeup of gastro intestinal stomach tumors (GISTs) from patients enrolled in the A6181112 phase IIIb trial. Tumor samples will be screened for mutations and this information will be used to determine whether the progression-free survival of patients being treated with the cancer medication sunitinib is related to the underlying genotype of their GIST.
Detailed description
In this companion study, we will analyze the genomic DNA from the GIST tumor specimens of patients enrolled in the in the A6181112 phase IIIb trial at participating U.S. and ex-U.S. medical centers. Specifically, GIST samples will be screened for mutations in KIT gene exons 9, 11, 13 and 17, and PDGFRA gene exons 12, 14 and 18, to determine the primary kinase genotype. Subset analyses will be performed and compared with the overall PFS rates observed in patients with primary and secondary imatinib resistance. Based on data from a previous phase I/II trial, our hypothesis is that patients with either primary or secondary imatinib resistance having a KIT exon 9-mutant or WT GIST will have a longer PFS when treated with sunitinib than patients with exon 11-mutant GIST. We further hypothesize that this difference will be observed among patients treated with high-dose imatinib.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1 | – | – |
| 2 | – | – |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients enrolled in Pfizer A6181112
Key inclusion criteria (1 listed)
- Patients enrolled in Pfizer A6181112
Key exclusion criteria (1 listed)
- Patients who do not consent for analysis of their tumor in this companion study
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study was withdrawn before enrolling participants, so there are no results.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Nov 2019.
- Pfizer A6181112 phase IIIb trialLink provided by the sponsor.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Christopher L Corless, MD, PhD principal investigator
Oregon Health and Science University
Questions about this trial
What is this clinical trial studying?
An observational study of Gastrointestinal Neoplasm, run by Oregon Health and Science University.
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 1 inclusion and 1 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: withdrawn, as of the sponsor's last update on 4 Nov 2019. Status can change between updates, so confirm with the study contact before making plans.
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.
Are results available for this study?
The study was withdrawn before enrolling participants, so there are no results.
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.
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 4 Nov 2019.