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ISL

Phase 3

HIV-1 Infection | Small molecule | Infectious Disease |Merck & Company, Inc.|Last Updated: Dec 27, 2024

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment35
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT04233216Doravirine/Islatravir (DOR/ISL) in Heavily Treatment-Experienced (HTE) Participants for Human Immunodeficiency Virus Type 1 (HIV-1) Infection (MK-8591A-019)PHASE3 COMPLETED 35Mar 18, 2020Nov 1, 2023Dec 27, 202498 United States, Australia +16
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Study Endpoints
Primary Endpoints
Percentage of Participants Receiving Doravirine/Islatravir (DOR/ISL) With ≥0.5 log10 Change From Day 1 Baseline to Day 8 in Human Immunodeficiency Virus Type 1 (HIV-1) Ribonucleic Acid (RNA) Compared to Placebo Treatment
Day 1 (baseline) and Day 8

Participants with a ≥0.5 log10 decrease from Day 1 baseline to Day 8 in HIV-1 RNA were identified by the central laboratory with an Abbott Real Time Polymerase Chain Reaction (PCR) assay which has a lower limit of detection (LLOD) of 40 copies/mL Only participants treated with DOR/ISL FDC or placebo were analyzed in this outcome measure.

Percentage of Participants With ≥1 AEs Through Week 49
Up to 49 weeks

An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment.

Percentage of Participants Withdrawing From Study Treatment Due to AE(s) Through Week 25
Up to 25 weeks

An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment.

Percentage of Participants With ≥1 Adverse Events (AEs) Through Week 25
Up to 25 weeks

An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment.

Percentage of Participants Withdrawing From Study Treatment Due to AE(s) Through Week 49
Up to 49 weeks

An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with this treatment.

Secondary Endpoints
Percentage of Participants With ≥1 Adverse Events (AEs) Through Week 97
Up to 97 weeks
Percentage of Participants Discontinuing From Study Therapy Due to AE(s) Through Week 97
Up to 97 weeks
Percentage of Participants Receiving DOR or ISL (Given With Antiretroviral Therapy [ART]) With ≥0.5 log10 Change From Day 1 Baseline to Day 8 HIV-1 RNA Compared to Placebo Treatment
Day 1 (baseline) and Day 8
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ISL + ARTEXPERIMENTALHTE participants with HIV-1 infection take ISL 0.75 mg once daily (QD) in combination with failing ART from Day 1 to Day 7; followed by open-label 100 mg DOR/0.75 mg ISL fixed dose combination (FDC) QD + OBT from Day 8 to Week 97.
DOR + ARTEXPERIMENTALHTE participants with HIV-1 infection take DOR 100 mg QD in combination with failing ART from Day 1 to Day 7; followed by open-label 100 mg DOR/0.75 mg ISL FDC QD + OBT from Day 8 to Week 97.
DOR/ISL + ARTEXPERIMENTALHTE participants with HIV-1 infection take 100 mg DOR/0.75 mg ISL FDC QD in combination with failing ART from Day 1 to Day 7; followed by open-label 100 mg DOR/0.75 mg ISL FDC QD + OBT from Day 8 to Week 97.
Placebo + ARTPLACEBO_COMPARATORHTE participants with HIV-1 infection take placebo QD in combination with failing ART from Day 1 to Day 7; followed by open-label 100 mg DOR/0.75 mg ISL FDC QD + OBT from Day 8 to Week 97.
Interventions
NameTypeDescription
ISLDRUGISL 0.75 mg capsule taken by mouth.
DORDRUGDOR 100 mg tablet taken by mouth.
DOR/ISLDRUG100 mg DOR/0.75 mg ISL FDC taken by mouth.
Placebo to ISLDRUGPlacebo capsule matched to ISL taken by mouth.
Placebo to DORDRUGPlacebo tablet matched to DOR taken by mouth.
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Eligibility Criteria
SexALL
Healthy VolunteersNo
Study Sites98

Inclusion Criteria: * Is HIV-1 positive. * Has been receiving the same baseline ART for ≥3 months prior to signing the Informed Consent Form/Assent Form. * Weighs ≥35 kg. * Has at least triple-class resistance (must include nucleoside reverse transcriptase inhibitor \[NRTI\], non-nucleoside reverse...

Countries:United StatesAustraliaCanadaChileColombiaFranceGermanyItalyJapanPeruPortugalPuerto RicoRussiaSouth AfricaSouth KoreaSpainUkraineUnited Kingdom
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