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NDec- decitabine-tetrahydrouridine

Phase 2

Sickle Cell Disease | Small molecule | Hematology |Novo Nordisk A/S|Trials Updated: Jul 22, 2026

NDec- decitabine-tetrahydrouridine target and mechanism

ModalitySmall molecule

Also known as NDec - oral decitabine-tetrahydrouridine

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment96

FDA Designations

No designations recorded

NDec- decitabine-tetrahydrouridine clinical trials

NDec- decitabine-tetrahydrouridine · 1 trial · 1 indication

Phase 2 1
NCT05405114Research Study Investigating How Well NDec Works in People With Sickle Cell DiseaseSickle Cell Disease
COMPLETED96 Analytics
PHASE2COMPLETED
Research Study Investigating How Well NDec Works in People With Sickle Cell Disease
Sickle Cell DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

Change in total haemoglobin
From baseline (week 0) to week 24

measured in g/dL

Secondary Endpoints

Cmax for decitabine from pharmacokinetic assessment
At week 24
Cmax for tetrahydrouridine from pharmacokinetic assessment
At week 24
Change in DNA methyltransferase 1 (DNMT1) activity
From baseline (week 0) to week 24
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
HU-non-eligible - NDec plus placeboEXPERIMENTALHU-non eligible patients randomised to treatment with NDec on one day and placebo on the other day
HU-non-eligible - NDec plus NDecEXPERIMENTALHU-non eligible patients randomised to treatment with NDec on both days
HU-non-eligible - Placebo plus placeboPLACEBO_COMPARATORHU-non eligible patients randomised to treatment with placebo on both days
HU-active - NDec plus placeboEXPERIMENTALHU-active patients randomised to treatment with NDec on one day and placebo on the other day
HU-active - NDec plus NDecEXPERIMENTALHU-active patients randomised to treatment with NDec on both days
HU-active - HUACTIVE_COMPARATORHU-active patients randomised to continue on open-label HU treatment

Interventions

NameTypeDescription
NDec - oral decitabine-tetrahydrouridineDRUGParticipants will get capsules (oral administration) to take once or twice weekly. The number of capsules will be based on their body weight
HU - HydroxyureaDRUGParticipants will get capsules daily (oral administration) according to local labelling
PlaceboDRUGParticipants will get capsules (oral administration) to take once or twice weekly. The number of capsules will be based on their body weight
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites118

Inclusion Criteria: * Age above or equal to 18 years at the time of signing informed consent * Confirmed diagnosis of SCD (including HbSS, HbSC, HbSβ0 thalassaemia and HbSβ+ thalassaemia or other Sickle Cell disease variants) * 2-10 episodes of documented vaso-occlusive crisis (VOCs) within the las...

Countries:United StatesCanadaFranceGreeceIndiaItalyJordanLebanonOmanSouth AfricaSpainSwitzerlandTurkey (Türkiye)United Kingdom
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Recent Changes (Last 90 Days)

MEDIUMAug 22, 2026NCT05405114TRIAL_REMOVED: changed
MEDIUMAug 22, 2026NCT05405114TRIAL_REMOVED: changed
MEDIUMAug 22, 2026NCT05405114TRIAL_REMOVED: changed
MEDIUMAug 22, 2026NCT05405114TRIAL_REMOVED: changed

Frequently asked questions about NDec- decitabine-tetrahydrouridine

What is NDec-decithabine-tetrahydrouridine used for?

NDec-decithabine-tetrahydrouridine is an investigational oral small molecule being studied for the treatment of sickle cell disease in adults. It was evaluated in a Phase 2 clinical trial that enrolled 96 participants aged 18 years and older across the United States, Canada, Europe, the Middle East, India, and South Africa.

Who makes NDec-decithabine-tetrahydrouridine?

NDec-decithabine-tetrahydrouridine is developed by Novo Nordisk A/S, which trades under the ticker NVO. Novo Nordisk is the sponsor of the clinical program evaluating this oral small molecule in sickle cell disease.

What phase is NDec-decithabine-tetrahydrouridine in?

NDec-decithabine-tetrahydrouridine is in Phase 2 development for sickle cell disease. The Phase 2 study has been completed, and the drug remains investigational rather than approved for commercial use.

What clinical trial has studied NDec-decithabine-tetrahydrouridine?

NDec-decithabine-tetrahydrouridine was evaluated in the Phase 2 trial NCT05405114, titled a research study investigating how well NDec works in people with sickle cell disease. The trial enrolled 96 adults, was randomized, double blind, and placebo controlled, and has been completed.

Is NDec-decithabine-tetrahydrouridine the same as NDec?

Yes. NDec-decithabine-tetrahydrouridine is also known as NDec, or oral decithabine-tetrahydrouridine. These names refer to the same investigational oral small molecule developed by Novo Nordisk for sickle cell disease.

Who was eligible for the NDec-decithabine-tetrahydrouridine Phase 2 trial?

The Phase 2 trial NCT05405114 enrolled adults 18 years of age and older of any sex with sickle cell disease. It did not include healthy volunteers. The study was conducted across the United States, Canada, France, Greece, India, Italy, Jordan, Lebanon, Oman, South Africa, Spain, Switzerland, Turkey, and the United Kingdom.