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AZP-3601

Phase 3

Chronic Hypoparathyroidism | Small molecule | Endocrine |AstraZeneca PLC|Trials Updated: Sep 29, 2025

AZP-3601 development status

Highest phase Phase 3 (NCT05778071)
Phase scored for AZNPhase 1
Registered trials 2 across 1 sponsor since Feb 2022

AZP-3601 target and mechanism

ModalitySmall molecule

Also known as eneboparatide

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment297

FDA Designations

No designations recorded

AZP-3601 clinical trials

AZP-3601 · 2 trials · 3 indications

Phase 3 1Phase 1 1
NCT05778071Evaluation of the Safety and Efficacy of Eneboparatide (AZP-3601) in Patients With Chronic HypoparathyroidismChronic Hypoparathyroidism
ACTIVE NOT_RECRUITING165 Analytics
PHASE3ACTIVE NOT_RECRUITING
Evaluation of the Safety and Efficacy of Eneboparatide (AZP-3601) in Patients With Chronic Hypoparathyroidism
Chronic HypoparathyroidismUnlock trial analytics

Study Endpoints

Primary Endpoints

Efficacy - Primary Endpoint
24 weeks

After 24 weeks of treatment, the proportion of patients in the eneboparatide treatment group vs. placebo: * Achieving complete independence from active vitamin D; * Achieving independence from therapeutic doses of oral calcium (i.e. taking oral elemental calcium supplements ≤600 mg/day); and * With albumin-adjusted serum calcium within the normal range (8.3 to 10.6 mg/dL).

Treatment Emergent Adverse Events (TEAEs)
Up to 2 weeks in Part A and Part B, and up to 3 months in Part C

Number of Treatment Emergent Adverse Events (TEAEs), as assessed by medDRA (v25).

Secondary Endpoints

Hypercalciuria
24 weeks
Change from baseline in the HPT-DD-SE - Physical Domain score
24 weeks
Change from baseline in the HPT-DD-SE - Cognitive Domain score
24 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
eneboparatideEXPERIMENTALStarting dose of 20 mcg; Administered once daily by subcutaneous injection
PlaceboPLACEBO_COMPARATORAdministered once daily by subcutaneous injection
AZP-3601EXPERIMENTALsubcutaneous (sc) administration once daily
Placebo (Parts A and B)PLACEBO_COMPARATORsubcutaneous (sc) administration once daily

Interventions

NameTypeDescription
eneboparatideCOMBINATION_PRODUCTSupplied as a solution (concentration of 250 mcg/mL or 500 mcg/mL) in single-patient-use prefilled pens
PlaceboCOMBINATION_PRODUCTPlacebo is supplied as a solution (containing the excipient solution for eneboparatide) in single-patient-use prefilled pens
AZP-3601DRUGLyophilized powder of AZP-3601 to be reconstituted with water for injection before injection
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites54

Inclusion Criteria: 1. Males and Females, 18-80 years of age 2. Patients with cHP for ≥12 months at the time of screening 3. Two paired measurements of showing low parathyroid hormone (PTH) and serum calcium either below normal or within normal under standard of care 4. Requirement for therapy with...

Countries:United StatesCanadaDenmarkFranceGermanyHungaryItalyJapanNetherlandsPolandPortugalSpainUnited Kingdom
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Frequently asked questions about AZP-3601

What is AZP-3601 used for?

AZP-3601 is an investigational small molecule being developed for the treatment of chronic hypoparathyroidism, a condition characterized by low levels of parathyroid hormone. It is currently in Phase 1 clinical development and has not been approved by regulatory authorities.

Who is developing AZP-3601?

AZP-3601 is being developed by AstraZeneca PLC, a multinational pharmaceutical company listed on the stock exchange under the ticker symbol AZN. The drug is currently in Phase 1 clinical trials for chronic hypoparathyroidism.

What phase is AZP-3601 in?

AZP-3601 is in Phase 1 clinical development. It is an investigational drug and has not yet received regulatory approval. A Phase 1 trial has been completed, and the drug remains under investigation for chronic hypoparathyroidism.

What clinical trials is AZP-3601 in?

AZP-3601 has one completed Phase 1 clinical trial, identified as NCT05239221. This study was a single ascending dose and multiple ascending dose trial conducted in healthy subjects and patients with hypoparathyroidism, enrolling 132 participants across Hungary and the Netherlands.

Is AZP-3601 the same as any other drug?

AZP-3601 is the primary name for this investigational drug. No alternative names have been reported for this compound. It is being studied under the clinical trial identifier NCT05239221 for chronic hypoparathyroidism.