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Study to Confirm of the Safety and Tolerability of Brincidofovir in Subjects With BK Virus Infection (Viremia) After Kidney Transplantation

S

SymBio Pharmaceuticals

Status and phase

Enrolling
Phase 2

Conditions

Nephropathy
Kidney Transplantation
BK Virus Infection

Treatments

Drug: Brincidofovir

Study type

Interventional

Funder types

Industry

Identifiers

NCT05511779
BCV-BN01

Details and patient eligibility

About

This is a Phase II, multicenter, open-label, randomized, standard of care (SOC) controlled, multiple ascending dose study to assess the safety and tolerability of IV Brincidofovir (BCV) in subjects with BKV infection after kidney transplantation. The study will be conducted at multiple study sites in several countries including Australia and Japan. Subjects who meet eligibility criteria will be enrolled in the study and will be randomized and assigned to BCV or SOC (defined as use of the same immunosuppressant administered during prescreening) before receipt of the first dose of study drug in both the Dose Escalation Phase and the Expansion Phase.

Enrollment

36 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Male or female, at least 18 years of age at the time of signing the informed consent at screening.
  • Kidney transplant recipient. "BK viral load increase and ≥ 3.6 log IU/mL" at 2 weeks post immunosuppression reduction or "BK viral load does not decrease by ≥ 0.3 log IU/mL" at 4 weeks post immunosuppression reduction during prescreening.

(Note: Immunosuppressant reduction needs to be continued during the screening period).

  • eGFR ≥ 30 mL/min.
  • Subjects under immunosuppression with tacrolimus, MMF/Myfortic, and/or corticosteroid.

Exclusion criteria

  • Subjects who weigh ≥ 120 kg.
  • National Institutes of Health/NCI CTCAE Grade 2 or higher diarrhea (ie, increase of ≥ 4 stools per day over usual pretransplant stool output) within 7 days before Day 1.
  • Poor clinical prognosis, including active malignancy or use of vasopressors other than low dose (eg, ≤ 5 μg/kg/min) dopamine for renal perfusion within 7 days before Day 1.
  • Use of renal replacement therapy within 7 days before Day 1.
  • History of intolerance to cidofovir or related compounds (ie, other nucleotide derivatives [adefovir or tenofovir])

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Sequential Assignment

Masking

None (Open label)

36 participants in 3 patient groups

Dose Escalation Phase: Cohort 1: BCV 0.3 mg/kg BIW
Experimental group
Description:
BCV: 0.3 mg/kg administered as a continuous IV infusion over 2 hours on Day1 and Day4 for 8 weeks (up to a maximum of 14 weeks).
Treatment:
Drug: Brincidofovir
Dose Escalation Phase: Cohort 2: BCV 0.4 mg/kg BIW
Experimental group
Description:
BCV: 0.4 mg/kg administered as a continuous IV infusion over 2 hours on Day1 and Day4 for 8 weeks (up to a maximum of 14 weeks).
Treatment:
Drug: Brincidofovir
Expansion Phase: BCV Recommended dosage regimen in the Dose Escalation Phase
Experimental group
Description:
BCV: Recommended dosage administered as a continuous IV infusion over 2 hours on Day1 and Day4 for 8 weeks (up to a maximum of 14 weeks).
Treatment:
Drug: Brincidofovir

Trial contacts and locations

14

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Central trial contact

Yuji Hoshino

Data sourced from clinicaltrials.gov

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