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Alobresib

Phase 1

Solid Tumors and Lymphomas | Small molecule | Oncology |Gilead Sciences, Inc.|Trials Updated: Dec 29, 2020

Alobresib development status

Highest phase Phase 1
Registered trials 3 across 1 sponsor since Mar 2015

Alobresib target and mechanism

ModalitySmall molecule

Also known as GS-5829

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDBiomarker
Total Trials1
Total Enrollment33

FDA Designations

No designations recorded

Alobresib clinical trials

Alobresib · 1 trial · 1 indication

Phase 1 1
NCT02392611Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Alobresib (Formerly GS-5829) in Adults With Advanced Solid Tumors and Lymphomas and in Combination With Exemestane or Fulvestrant in Adults With Estrogen Receptor Positive Breast CancerSolid Tumors and Lymphomas
COMPLETED33 Analytics
PHASE1COMPLETED
Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Alobresib (Formerly GS-5829) in Adults With Advanced Solid Tumors and Lymphomas and in Combination With Exemestane or Fulvestrant in Adults With Estrogen Receptor Positive Breast Cancer
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Study Endpoints

Primary Endpoints

Number of Participants Experiencing Dose Limiting Toxicities (DLTs)
Baseline (Day 1) up to 28 days

A DLT was a toxicity, considered possibly related to alobresib, and which occurred during DLT assessment window (Day 1 through Cycle 1 Day 28) in each cohort: Grade ≥ 4 neutropenia (absolute neutrophil count \[ANC\] \< 500/mm\^3); Grade ≥3 neutropenia (ANC\< 1000/mm\^3) with fever (a single temperature of \> 38.3°C or a sustained temperature of ≥ 38°C for more than 1 hour \[hr\]); Grade ≥ 3 thrombocytopenia; Grade ≥ 2 bleeding; Grade ≥ 3 non hematologic toxicity, except Grade 3 nausea or emesis with maximum duration of 48 hrs on adequate medical therapy and Grade 3 diarrhea which persists for \< 72 hrs in absence of maximal medical therapy; Grade ≥ 2 non hematologic treatment-emergent adverse event (TEAE) of potential clinical significance; treatment interruption ≥ 7 days due to unresolved toxicity; and any Grade 3 or 4 elevation in aspartate aminotransferase (AST) or alanine aminotransferase (ALT) associated with a Grade 2 elevation in bilirubin that is at least possibly related to alobresib.

Secondary Endpoints

Pharmacokinetic (PK) Parameter: Cmax of Alobresib
Cycle 1: Predose (0 hr), 0.5, 1, 2, 3, 4, 6, 8, 12 and 24 hrs postdose on Days 1 and 8 (1 Cycle = 28 days)
PK Parameter: Ctau of Alobresib
Cycle 1: Predose (0 hr), 0.5, 1, 2, 3, 4, 6, 8, 12, and 24 hrs postdose on Day 8 (1 Cycle = 28 days)
PK Parameter: AUC0-24 of Alobresib
Cycle 1: Predose (0 hr), 0.5, 1, 2, 3, 4, 6, 8, 12, and 24 hrs postdose on Days 1 and 8 (1 Cycle = 28 days)
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Monotherapy: Alobresib 0.6 mgEXPERIMENTALParticipants with advanced solid tumors and lymphomas who have failed or are intolerant to standard therapy or for whom no standard therapy exists, will receive alobresib at a dose of 0.6 mg to determine the MTD.
Monotherapy: Alobresib 1.4 mgEXPERIMENTALParticipants with advanced solid tumors and lymphomas who have failed or are intolerant to standard therapy or for whom no standard therapy exists, will receive alobresib at a dose of 1.4 mg to determine the MTD.
Monotherapy: Alobresib 2 mgEXPERIMENTALParticipants with advanced solid tumors and lymphomas who have failed or are intolerant to standard therapy or for whom no standard therapy exists, will receive alobresib at a dose of 2 mg to determine the MTD.
Monotherapy: Alobresib 3 mgEXPERIMENTALParticipants with advanced solid tumors and lymphomas who have failed or are intolerant to standard therapy or for whom no standard therapy exists, will receive alobresib at a dose of 3 mg to determine the MTD.
Monotherapy: Alobresib 4 mgEXPERIMENTALParticipants with advanced solid tumors and lymphomas who have failed or are intolerant to standard therapy or for whom no standard therapy exists, will receive alobresib at a dose of 4 mg to determine the MTD.
Monotherapy: Alobresib 6 mgEXPERIMENTALParticipants with advanced solid tumors and lymphomas who have failed or are intolerant to standard therapy or for whom no standard therapy exists, will receive alobresib at a dose of 6 mg to determine the MTD.
Combination Therapy: Alobresib 2 mg + ExemestaneEXPERIMENTALParticipants with advanced stage estrogen receptor positive breast cancer for whom no standard curative therapy exists, will receive alobresib at a dose of 2 mg in combination with exemestane 25 mg.
Combination Therapy: Alobresib 2 mg + FulvestrantEXPERIMENTALParticipants with advanced stage estrogen receptor positive breast cancer for whom no standard curative therapy exists, will receive alobresib at a dose of 2 mg in combination with fulvestrant 500 mg.
Combination Therapy: Alobresib 3 mg + FulvestrantEXPERIMENTALParticipants with advanced stage estrogen receptor positive breast cancer for whom no standard curative therapy exists, will receive alobresib at a dose of 3 mg in combination with fulvestrant 500 mg.

Interventions

NameTypeDescription
AlobresibDRUGTablet administered orally once daily on Study Day 1 through Cycle 1 Day 28 of 28 days cycle
ExemestaneDRUGTablets administered orally once daily on Cycle 1 Day 1 of 28 days cycle
FulvestrantDRUGAdministered intramuscularly on Cycle 1 Day 1 of 28 days cycle and every 28 days
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites4

Key Inclusion Criteria: * Group 1: Histologically or cytologically confirmed advanced malignant solid tumor or lymphoma (any subtype) that is refractory to or intolerant of standard therapy or for which no standard therapy is available * Group 2: Post-menopausal women with advanced stage estrogen r...

Countries:United States
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Frequently asked questions about Alobresib

What is Alobresib used for?

Alobresib is an investigational small molecule being studied in adults with advanced solid tumors and lymphomas. It has also been evaluated in combination with exemestane or fulvestrant in adults with estrogen receptor positive breast cancer. It is not approved for any indication and remains in clinical development.

Who is developing Alobresib?

Alobresib is being developed by Gilead Sciences, Inc., which trades on the Nasdaq under the ticker GILD. The company sponsored the clinical program evaluating the compound in advanced solid tumors and lymphomas, including a combination cohort in estrogen receptor positive breast cancer.

What phase is Alobresib in?

Alobresib is in Phase 1 development. The single registered trial, NCT02392611, was a Phase 1 study that has since been completed. The program enrolled 33 participants and was conducted in the United States in adults aged 18 years and older.

What clinical trials is Alobresib in?

Alobresib has been studied in one registered clinical trial, NCT02392611, titled a study to evaluate safety, tolerability, pharmacokinetics, and pharmacodynamics of Alobresib in adults with advanced solid tumors and lymphomas and in combination with exemestane or fulvestrant in adults with estrogen receptor positive breast cancer. That trial is completed.

Is Alobresib the same as GS-5829?

Yes. Alobresib was formerly known as GS-5829, and the two names refer to the same investigational compound from Gilead Sciences. The registered Phase 1 trial NCT02392611 lists the drug under both names, so searches for either term point to the same asset.

Is Alobresib FDA approved?

No. Alobresib is an investigational small molecule and has not been approved by the FDA. Its only registered study, NCT02392611, was a completed Phase 1 trial in advanced solid tumors and lymphomas, so the compound remains in early clinical development rather than on the market.