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Adefovir dipivoxil

Phase 2

Hepatitis B | Small molecule | Infectious Disease |Gilead Sciences, Inc.|Last Updated: Aug 10, 2021

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials3
Total Enrollment79

FDA Designations

No designations recorded

Clinical trial landscape

Adefovir dipivoxil · 6 trials · 3 indications

Phase 2 1Phase 1 5
NCT00644761PK Study of Tacrolimus and Cyclosporine When Co-Administered With Adefovir Dipivoxil in Post-Liver Transplant PatientsHepatitis B
COMPLETED16 Analytics
PHASE2COMPLETED
PK Study of Tacrolimus and Cyclosporine When Co-Administered With Adefovir Dipivoxil in Post-Liver Transplant Patients
Hepatitis BUnlock trial analytics

Study Endpoints

Primary Endpoints

To evaluate pharmacokinetics of tacrolimus or cyclosporine when co-administered with adefovir dipivoxil 10 mg once daily to patients post-liver transplantation
21 days
Development of de Novo Hepatitis B Infection After Transplant With a Core Antibody Positive Liver
Standard of care visits post-transplant for 2 years

Determined by positive hepatitis B serology (tests positive for HBsAg) and HBV DNA viral load (\>40 IU/mL).

To characterize the PK profile of adefovir 0.14 mg/kg and 0.3 mg/kg in children 2-11 years, including dose proportionality of adefovir dipivoxil liquid formulation. To characterize the PK profile of adefovir dipivoxil 10 mg in adoloscents 12-17 years.
8 days

Secondary Endpoints

To evaluate PK of ADV 10 mg once daily when co-administered with tacrolimus or cyclosporine in patients post-liver transplantation. To evaluate the safety of ADV 10 mg once daily, when co-administered with tacrolimus or cyclosporine for 14 days.
21 days
Proportion of Patients With a Sustained Hepatitis B Surface Antibody Titer > 500 IU/mL Prior to and After Vaccination
12-18 months post transplant
Proportion of Patients Who Develop de Novo Hepatitis B Infection Post ADV Withdrawal, Which Will be Assessed at 6 Months Post Withdrawal
Six months after hepatitis B vaccination (2 years post transplant)
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Treatment Arm 1OTHERAdefovir dipivoxil 10 mg once daily with tacrolimus or cyclosporine for 14 days
ADV plus hepatitis B vaccinationEXPERIMENTALAdefovir dipivoxil and hepatitis B vaccination: All subjects will receive adefovir 10mg po daily, or adjusted for renal function and an option for Hepatitis B vaccination, double dose.
Treatment Group AOTHERADV (0.14 mg/kg) oral suspension formulation on Day 1 followed by ADV (0.3 mg/kg) oral suspension formulation on Day 8 in 2-6 and 7-11 year old age group
Treatment Group BOTHERADV (0.3 mg/kg) oral suspension formulation on Day 1 followed by ADV (0.14 mg/kg) oral suspension formulation on Day 8 in 2-6 and 7-11 year old age group
Treatment Group COTHERADV 10 mg single dose on Day 1 in 12-17 year old age group

Interventions

NameTypeDescription
Adefovir DipivoxilDRUGAdefovir dipivoxil 10 mg once daily for 14 days co-administered with tacrolimus or cyclosporine
Adefovir dipivoxil and hepatitis B vaccinationDRUGAdefovir 10mg po daily, or adjusted for renal function and option for Hepatitis B vaccination, double dose
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites11

Inclusion Criteria: * 18-65 years of age * Greater than or equal to 6 months post-liver transplantation * Must be on a documented stable total daily dose of tacrolimus or cyclosporine for three months. * Must have calculated creatinine clearance greater than or equal 50 mL/min (Cockcroft-Gault meth...

Countries:United StatesBelgiumGermanyPolandUnited Kingdom
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Frequently asked questions about Adefovir dipivoxil

What is Adefovir Dipivoxil used for?

Adefovir Dipivoxil is an investigational small molecule being developed for HIV infections, Hepatitis B, and Chronic Hepatitis B. It is a nucleotide analog reverse transcriptase inhibitor that has been studied in Phase 3 clinical trials for chronic Hepatitis B. The drug is not approved and remains in clinical development.

What does Adefovir Dipivoxil target?

Adefovir Dipivoxil targets hepatitis B virus reverse transcriptase, an enzyme essential for viral replication. By inhibiting this enzyme, the drug aims to suppress viral DNA synthesis and reduce hepatitis B viral load in infected patients. This mechanism is relevant to its use in treating chronic Hepatitis B infections.

Who makes Adefovir Dipivoxil?

Adefovir Dipivoxil is developed by Gilead Sciences, Inc., a biopharmaceutical company traded on NASDAQ under the ticker GILD. Gilead has conducted multiple clinical trials of this drug for chronic Hepatitis B, including studies in adult and pediatric populations.

What phase is Adefovir Dipivoxil in?

Adefovir Dipivoxil has completed Phase 3 clinical trials for chronic Hepatitis B, with three completed trials involving 221 total participants. However, the drug is still investigational and has not received FDA approval. Its development status is not specified beyond these completed trials.

What clinical trials is Adefovir Dipivoxil in?

Adefovir Dipivoxil has been studied in completed trials including NCT00071201, a Phase 3 study of a liquid suspension in 48 adults with chronic Hepatitis B, and NCT00095121, a Phase 3 trial in 173 children and adolescents. Additional Phase 1 studies include NCT00645294 and NCT01146808.

Is Adefovir Dipivoxil the same as Hepsera?

Adefovir Dipivoxil is the generic name for the drug also known as Hepsera, which is a brand name used for adefovir dipivoxil. The drug is being developed by Gilead Sciences for chronic Hepatitis B and has been evaluated in clinical trials under the name Adefovir Dipivoxil.