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HTD1801

Phase 2

Fatty Liver, Nonalcoholic | Small molecule | Metabolic |Pulmonx Corporation|Last Updated: Aug 25, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment101

FDA Designations

No designations recorded

Clinical trial landscape

HTD1801 · 3 trials · 13 indications

Phase 2 3
NCT04604652Open-Label Study of HTD1801 in Adult Subjects With Primary Biliary CholangitisPrimary Biliary Cholangitis
COMPLETED24 Analytics
NCT03656744A Study of HTD1801 in Adults With Nonalcoholic Steatohepatitis (NASH) and Type 2 Diabetes Mellitus (T2DM)Fatty Liver, Nonalcoholic
COMPLETED101 Analytics
NCT03333928A POC and Dose-Ranging Study of HTD1801 in PSC PatientsPrimary Sclerosing Cholangitis (PSC)
COMPLETED59 Analytics
PHASE2COMPLETED
Open-Label Study of HTD1801 in Adult Subjects With Primary Biliary Cholangitis
Primary Biliary CholangitisUnlock trial analytics
PHASE2COMPLETED
A Study of HTD1801 in Adults With Nonalcoholic Steatohepatitis (NASH) and Type 2 Diabetes Mellitus (T2DM)
Fatty Liver, NonalcoholicUnlock trial analytics
PHASE2COMPLETED
A POC and Dose-Ranging Study of HTD1801 in PSC Patients
Primary Sclerosing Cholangitis (PSC)Unlock trial analytics

Study Endpoints

Primary Endpoints

Percent Change in Alkaline Phosphatase (ALP) at Week 12 Compared to Baseline
Baseline to Week 12

To evaluate the effects of HTD1801 on serum ALP in adult subjects with PBC who have experienced an inadequate response to standard therapy. Inadequate response is defined as ALP ≥1.5 × upper limit of normal (ULN) despite having been on adequate doses of ursodeoxycholic acid (UDCA) for at least 6 months. A reduction in ALP represents an improvement.

Absolute Change in Liver Fat Content (LFC) as Measured by MRI-PDFF
Baseline through study Week 18

The primary endpoint was the absolute change in liver fat content (LFC) as measured by magnetic resonance imaging derived proton density fat fraction (MRI-PDFF) from Baseline to Week 18.

Absolute Change in Serum Alkaline Phosphatase (ALP) From Baseline to Week 6 in Period 1
Baseline to Week 6

Secondary Endpoints

Change in Total Bilirubin From Baseline to Week 12
Baseline to Week 12
Change in Serum Gamma-glutamyl Transferase (GGT) From Baseline to Week 12
Baseline to Week 12
Change in Serum Total Cholesterol From Baseline to Week 12
Baseline to Week 12
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Open-labelEXPERIMENTALHTD1801 (BUDCA) 250 mg tablets. Dosed at 1000 mg BID with food.
500mg HTD1801, bidEXPERIMENTAL -
1000mg HTD1801, bidEXPERIMENTAL -
placebo, bidPLACEBO_COMPARATOR -
HTD1801 500 mg BIDACTIVE_COMPARATOR -
HTD1801 1000 mg BIDACTIVE_COMPARATOR -
Placebo BIDPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
HTD1801 (BUDCA)DRUGHTD1801 (BUDCA) 250 mg tablets. Dose 1000 mg twice daily with food for 12 weeks.
HTD1801DRUGHTD1801 tablets, 250mg
PlaceboDRUGtablets manufactured to mimic HTD1801 tablets
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites12

Inclusion Criteria: * Have a clinical diagnosis of PBC as confirmed by patient history consistent with the American Association for the Study of Liver Diseases (AASLD) Practice Guideline confirmed by two of the following three criteria: 1. Biochemical evidence of cholestasis with elevation of AL...

Countries:United StatesCanada
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