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Testing GSK2636771 as a Potential Targeted Treatment in Cancers With PTEN Genetic Changes (MATCH-Subprotocol N)

MATCH Treatment Subprotocol N: Phase II Study of PI3K Beta Specific Inhibitor, GSK2636771, in Patients With Tumors With PTEN Mutation or Deletion, With PTEN Expression on IHC

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04439149
Enrollment
24
Registered
2020-06-19
Start date
2016-05-05
Completion date
2026-12-31
Last updated
2025-11-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Advanced Lymphoma, Advanced Malignant Solid Neoplasm, Hematopoietic and Lymphoid Cell Neoplasm, Refractory Lymphoma, Refractory Malignant Solid Neoplasm, Refractory Multiple Myeloma

Brief summary

This phase II MATCH treatment trial identifies the effects of GSK2636771 in patients whose cancer has a genetic change called PTEN mutation or deletion. GSK2636771 may block a protein called PI3K-beta, which may be needed for growth of cancer cells that express PTEN mutations. Researchers hope to learn if GSK2636771 will shrink this type of cancer or stop its growth.

Detailed description

PRIMARY OBJECTIVE: I. To evaluate the proportion of patients with objective response (OR) to targeted study agent(s) in patients with advanced refractory cancers/lymphomas/multiple myeloma. SECONDARY OBJECTIVES: I. To evaluate the proportion of patients alive and progression free at 6 months of treatment with targeted study agent in patients with advanced refractory cancers/lymphomas/multiple myeloma. II. To evaluate time until death or disease progression. III. To identify potential predictive biomarkers beyond the genomic alteration by which treatment is assigned or resistance mechanisms using additional genomic, ribonucleic acid (RNA), protein and imaging-based assessment platforms. IV. To assess whether radiomic phenotypes obtained from pre-treatment imaging and changes from pre- through post-therapy imaging can predict objective response and progression free survival and to evaluate the association between pre-treatment radiomic phenotypes and targeted gene mutation patterns of tumor biopsy specimens. OUTLINE: Patients receive PI3K-beta inhibitor GSK2636771 (GSK2636771) 400 mg orally (PO) once daily (QD) on days 1-28. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 3 months if less than 2 years from study entry, and then every 6 months for year 3 from study entry. THE MATCH SCREENING TRIAL: Please see NCT02465060 for information on the MATCH Screening Protocol and applicable documents.

Interventions

Sponsors

National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients must have met applicable eligibility criteria in the Master MATCH Protocol prior to registration to treatment subprotocol * Patients must have an electrocardiogram (ECG) within 8 weeks prior to treatment assignment and must have no clinically important abnormalities in rhythm, conduction or morphology of resting ECG (e.g. complete left bundle branch block, third degree heart block) * Patients must have PTEN gene mutation/deletion * There must be evidence of PTEN expression by immunohistochemistry (IHC) (any amount of staining will be considered positive for expression) * Patients with complete loss of PTEN by IHC, regardless of PTEN mutations/deletion status, will be enrolled into MATCH subprotocol EAY131-P, not this subprotocol (EAY131-N) * Patients must have hemoglobin \>= 9 g/dL * Patients must have a serum creatinine that =\< 1.5 x upper limit of normal (ULN) or have a 24-hour creatinine clearance of \>= 50 mL/min

Exclusion criteria

* Patients must not have known hypersensitivity to GSK2636771 or compounds of similar chemical or biologic composition. * Patients must not have tumors harboring co-existing aberrations activating the PI3K/MTOR and MAPK pathways, such as PIK3CA, PIK3R1, BRAF, KRAS and AKT1, TSC1/2, mTOR, NF2, NRAS, HRAS, NF1 * Patients must not have received prior treatment with agents targeting the PI3K beta, AKT, or mTOR pathways: * This includes (but is not limited to): * mTOR inhibitors: temsirolimus, everolimus, ridaforolimus, sirolimus, salirasib, CC-223, INK128, DS-3078, CC-115, AZD-2014 * Dual PI3K/mTOR inhibitors: BEZ235, XL-765, GDC 0980, PF-04691502, GSK 2126458, Quinacrine, PKI-587, P-P7170, LY3023414, GDC 0084, DS 7423, CBLC-137 * Pan-PI3K inhibitors: BKM-120 (buparlisib), PX-866, XL-147, GDC-0941 (pictilisib), BAY-806946, ZSTK-474, WX 037, SRX5000, SRX2523, AMG511, PQR308, BAY 94-9343 * PI3K inhibitors with beta isoform activity: prior GSK2636771 is not allowed, nor is GS-9820, PQR3XX, KAR4139 * The following treatments are allowed: * BYL719 (PI3Kalpha inhibitor) * GDC-0032 (PI3Kalpha inhibitor) * INK1117 (PI3Kalpha inhibitor) * Idelalisib (PI3Kdelta inhibitor) * IPI-125 (PI3K gamma delta inhibitor) * TGR1202 (PI3Kdelta inhibitor) * SRX2558 (PI3Kdelta inhibitor) * RP6530 (PI3K gamma delta inhibitor) * PWT143 (PI3Kdelta inhibitor) * IPI443 (PI3K gamma delta inhibitor) * GNE293 (PI3Kdelta inhibitor) * Patients with a history of interstitial lung disease or pneumonitis are excluded * Patients must not have any congenital platelet function defects and cannot be on any of the following anti-platelet drugs: clopidogrel, ticlopidine, prasugrel, that act at platelet purinergic receptors * Any need for starting anti-platelet therapy in a patient enrolled to this arm will have to be evaluated by the subprotocol chair

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR)Tumor assessments occurred at baseline, then every 2 cycles for the first 26 cycles and every 3 cycles thereafter until disease progression, up to 3 years post registrationORR is defined as the percentage of patients whose tumors have a complete or partial response to treatment among analyzable patients. Objective response is defined consistent with Response Evaluation Criteria in Solid Tumors version 1.1, the Cheson (2014) criteria for lymphoma patients, and the Response Assessment in Neuro-Oncology criteria for glioblastoma patients. Details about how to define complete response and partial response can be found in the master protocol. 90% two-sided binomial exact confidence interval is calculated for ORR.

Secondary

MeasureTime frameDescription
6-month Progression-free Survival (PFS) RateAssessed at baseline, then every 2 cycles for the first 26 cycles, and every 3 cycles thereafter until disease progression, up to 3 years post registration, from which 6-month PFS rate is determinedProgression free survival is defined as time from treatment start date to date of progression or death from any cause, whichever occurs first. Disease progression was evaluated using the Response Evaluation Criteria in Solid Tumors version 1.1, the Cheson (2014) criteria for lymphoma patients, and the Response Assessment in Neuro-Oncology criteria for glioblastoma patients. Please refer to the protocol for detailed definitions of disease progression. 6 month PFS rate was estimated using the Kaplan-Meier method, which can provide a point estimate for any specific time point.
Progression Free Survival (PFS)Assessed at baseline, then every 2 cycles for the first 26 cycles and every 3 cycles thereafter until disease progression, up to 3 years post registrationPFS was defined as time from treatment start date to date of disease progression or death from any causes, whichever occurred first. Median PFS was estimated using the Kaplan-Meier method. Disease progression was evaluated using the Response Evaluation Criteria in Solid Tumors version 1.1, the Cheson (2014) criteria for lymphoma patients, and the Response Assessment in Neuro-Oncology criteria for glioblastoma patients. Please refer to the protocol for detailed definitions of disease progression.

Countries

United States

Participant flow

Recruitment details

Subprotocol N was activated on February 25, 2016. Twenty-four patients were enrolled on EAY131-N between May 5, 2016, and December 5, 2016. All patients were enrolled on the basis of the results from the NCI-MATCH assay.

Pre-assignment details

Patients whose tumors harboring PTEN mutation/deletion without loss of PTEN protein expression were assigned to sub-protocol N. The mutation status was determined by MATCH central Oncomine assay for all patients in this arm.

Participants by arm

ArmCount
Treatment (GSK2636771)
Patients receive PI3K-beta inhibitor GSK2636771 400mg PO QD on days 1-28. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity. PI3K-beta Inhibitor GSK2636771: Given PO
22
Total22

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event4
Overall StudyComplicating disease1
Overall StudyDisease Progression14
Overall StudyIneligible1
Overall StudyNever start protocol therapy1
Overall StudyWithdrawal by Subject3

Baseline characteristics

CharacteristicTreatment (GSK2636771)
Age, Continuous64 years
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
20 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
1 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants
Race (NIH/OMB)
White
20 Participants
Sex: Female, Male
Female
14 Participants
Sex: Female, Male
Male
8 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
22 / 24
other
Total, other adverse events
17 / 23
serious
Total, serious adverse events
8 / 23

Outcome results

Primary

Objective Response Rate (ORR)

ORR is defined as the percentage of patients whose tumors have a complete or partial response to treatment among analyzable patients. Objective response is defined consistent with Response Evaluation Criteria in Solid Tumors version 1.1, the Cheson (2014) criteria for lymphoma patients, and the Response Assessment in Neuro-Oncology criteria for glioblastoma patients. Details about how to define complete response and partial response can be found in the master protocol. 90% two-sided binomial exact confidence interval is calculated for ORR.

Time frame: Tumor assessments occurred at baseline, then every 2 cycles for the first 26 cycles and every 3 cycles thereafter until disease progression, up to 3 years post registration

Population: Eligible and treated

ArmMeasureValue (NUMBER)
Treatment (GSK2636771)Objective Response Rate (ORR)0 percentage of participants
Secondary

6-month Progression-free Survival (PFS) Rate

Progression free survival is defined as time from treatment start date to date of progression or death from any cause, whichever occurs first. Disease progression was evaluated using the Response Evaluation Criteria in Solid Tumors version 1.1, the Cheson (2014) criteria for lymphoma patients, and the Response Assessment in Neuro-Oncology criteria for glioblastoma patients. Please refer to the protocol for detailed definitions of disease progression. 6 month PFS rate was estimated using the Kaplan-Meier method, which can provide a point estimate for any specific time point.

Time frame: Assessed at baseline, then every 2 cycles for the first 26 cycles, and every 3 cycles thereafter until disease progression, up to 3 years post registration, from which 6-month PFS rate is determined

Population: Eligible and treated

ArmMeasureValue (NUMBER)
Treatment (GSK2636771)6-month Progression-free Survival (PFS) Rate4.8 percentage of participants
Secondary

Progression Free Survival (PFS)

PFS was defined as time from treatment start date to date of disease progression or death from any causes, whichever occurred first. Median PFS was estimated using the Kaplan-Meier method. Disease progression was evaluated using the Response Evaluation Criteria in Solid Tumors version 1.1, the Cheson (2014) criteria for lymphoma patients, and the Response Assessment in Neuro-Oncology criteria for glioblastoma patients. Please refer to the protocol for detailed definitions of disease progression.

Time frame: Assessed at baseline, then every 2 cycles for the first 26 cycles and every 3 cycles thereafter until disease progression, up to 3 years post registration

Population: Eligible and treated

ArmMeasureValue (MEDIAN)
Treatment (GSK2636771)Progression Free Survival (PFS)1.8 months

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026