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ALXN2420

Phase 2

Acromegaly | Small molecule | Endocrine |AstraZeneca PLC|Last Updated: Apr 7, 2026

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 Enrollment60
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07037420ALXN2420 Versus Placebo in Combination With Somatostatin Analogs in Participants With AcromegalyPHASE2 RECRUITING 60Oct 28, 2025Nov 11, 2027Apr 7, 202645 United States, Argentina +9
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Study Endpoints
Primary Endpoints
Percentage Change From Baseline in Serum IGF-1 Level at Week 15
Baseline, Week 15
Secondary Endpoints
Number of Participants Who Achieve Serum IGF-1 Level ≤1.3 Upper Limit of Normal (ULN) at Week 15
Week 15
Number of Participants Who Achieve of Serum IGF-1 Level ≤1.0 ULN at Week 15
Week 15
Change from Basline in Symptoms as assessed by disease specific questionnaire, at Week 15
Baseline, Week 15
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ALXN2420EXPERIMENTALDuring the Primary Evaluation Period, participants will receive the first dose of ALXN2420 via SC injection on Day 1, followed by daily administration thereafter for a total of 15 weeks.
PlaceboPLACEBO_COMPARATORDuring the Primary Evaluation Period, participants will receive the first dose of placebo via SC injection on Day 1, followed by daily administration thereafter for a total of 15 weeks.
Open-label Extension PeriodEXPERIMENTALDuring the Open-label Extension (OLE) Period, participants in the ALXN2420 treatment groups will continue receiving ALXN2420 treatment and participants in the placebo groups will crossover to receive ALXN2420 at Week 15. At the Week 15 Visit, the dose level and the dosing regimen of ALXN2420 will be determined for each participant based on the Week 13 IGF-1 level. The OLE Period assessments will be performed at Weeks 19, 26, 32, 39, 45, and 52.
Interventions
NameTypeDescription
ALXN2420DRUGALXN2420 will be administered via subcutaneous (SC) injection
PlaceboDRUGPlacebo will be administered via SC injection.
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Eligibility Criteria
Age Range18 Years — 80 Years
SexALL
Healthy VolunteersNo
Study Sites45

Inclusion Criteria: * Documented diagnosis of acromegaly, that is, historically documented evidence of a GH-secreting pituitary adenoma based on MRI or pathology report * Must be receiving maximum, or maximally tolerated dose per treating physician judgment, of long-acting SSAs (octreotide or lanre...

Countries:United StatesArgentinaBrazilChinaDenmarkHungaryItalyLithuaniaNetherlandsPolandRomania
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT07037420primaryCompletionDate: changed
LOWMay 24, 2026NCT07037420studyFirstPostDate: changed