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PegIFN-2b

Phase 4

HIV Infections | Small molecule | Infectious Disease |Merck & Company, Inc.|Trials Updated: Apr 7, 2017

PegIFN-2b development status

Highest phase Phase 4 (NCT01756079)
Phase scored for MRKPhase 2
Registered trials 5 across 1 sponsor since Jul 2008

PegIFN-2b target and mechanism

ModalitySmall molecule

Also known as PegIFN-2b (Sylatron®), SCH 054031, MK-4031, Pegylated interferon alfa-2b, Peginterferon alfa-2b

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment124

FDA Designations

No designations recorded

PegIFN-2b clinical trials

PegIFN-2b · 2 trials · 4 indications

Phase 2 1Phase 1 1
NCT00959699A Phase 2b, Safety and Efficacy Study of Boceprevir in Patients Coinfected With HIV and Hepatitis C (P05411 AM4)HIV Infections
COMPLETED99 Analytics
PHASE2COMPLETED
A Phase 2b, Safety and Efficacy Study of Boceprevir in Patients Coinfected With HIV and Hepatitis C (P05411 AM4)
HIV InfectionsUnlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Participants Achieving Sustained Viral Response (SVR) at Follow-up Week 24 (FW24) Among Randomized Participants Who Received At Least One Dose of Trial Medication
Up to Week 72

SVR24 is defined as undetectable plasma hepatitis C virus ribonucleic acid (HCV-RNA) at 24 weeks after the end of all study treatment. If there was no value in the FW24 visit window, the closest value available chronologically after this window was used; if a value was still missing after that, the value from Follow-up Week 12 (FW12) was used. HCV-RNA is detected by a nucleic acid amplification test and the lower limit of detection for this assay is 9.3 IU/mL.

Area Under the Concentration-time Curve From Time 0 to Infinity (AUC0-∞)
From hour 0 (pre-dose) to 288 hours post-dose

AUC0-∞ is a measure of the mean concentration levels of drug in the plasma after the dose.

AUC From Time 0 to the Last Measurable Sample (AUC0-last)
From hour 0 (pre-dose) up to 288 hours post-dose

AUC0-last is a measure of the total amount of drug in the plasma from the dose to the last measurable sample.

Maximum Observed Serum Concentration (Cmax)
From hour 0 (pre-dose) to 288 hours post-dose

Cmax is a measure of the maximum amount of drug in the plasma after the dose is given.

Time to Maximum Observed Serum Concentration (Tmax)
From hour 0 (pre-dose) up to 288 hours post-dose

Tmax is a measure of the time to reach the maximum concentration in the plasma after the drug dose.

Apparent Terminal Half-life (T1/2)
From hour 0 (pre-dose) up to 288 hours post-dose

T1/2 is the time required for a given drug concentration in the plasma to decrease by 50%.

Apparent Total Body Clearance (CL/F)
From hour 0 (pre-dose) up to 288 hours post-dose

CL/F is a calculation of the rate at which a drug is removed from the body via renal, hepatic and other clearance pathways, expressed as volume (milliliters) per unit of time (minutes).

Apparent Volume of Distribution (Vd/F)
From hour 0 (pre-dose) up to 288 hours post-dose

Vd/F is defined as the distribution of a medication between the plasma and the rest of the body after the dose. It is the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired blood concentration of the drug.

Secondary Endpoints

Percentage of Participants Achieving SVR24 Among Randomized Participants Who Received At Least One Dose of Boceprevir (Experimental) or Placebo (Control)
Up to Week 72
Percentage of Participants With Early Virologic Response (EVR) Who Achieved SVR24
Up to Week 12
Percentage of Participants With Undetectable HCV-RNA at Follow-up Week 12 (FW12)
Up to Week 60
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PegIFN-2b + RBVPLACEBO_COMPARATORPegIFN-2b (1.5 µg/kg/week subcutaneously) plus RBV (600-1400 mg/day, orally, divided into two daily doses) for 4 weeks followed by placebo to boceprevir plus PegIFN-2b/RBV for 44 weeks with 24 weeks post-treatment follow-up (Control Arm). Participants who do not achieve HCV-RNA \<9.3 IU/mL by Treatment Week 24 (TW24) are eligible to cross-over and receive boceprevir along with the PegIFN-2b and RBV for up to 44 weeks.
PegIFN-2b + RBV + BoceprevirACTIVE_COMPARATORPegIFN-2b (1.5 µg/kg/week subcutaneously) plus RBV (600- 1400 mg/day, orally, divided into two daily doses) for 4 weeks followed by boceprevir (800 mg, orally, 3 times per day) plus PegIFN-2b/RBV for 44 weeks with 24 weeks post-treatment follow-up.
Healthy ParticipantsACTIVE_COMPARATORParticipants with normal renal function defined as having a creatinine clearance test value of ≥80 mL/min/1.73 m\^2. Participants receive a single subcutaneous dose of PegIFN-2b, 4.5 μg/kg.
Participants with Moderate Renal ImpairmentEXPERIMENTALParticipants with moderate renal impairment defined as having a creatinine clearance test value of 30-50 mL/min/1.73 m\^2. Participants receive a single subcutaneous dose of PegIFN-2b, 4.5 μg/kg.
Participants with Severe Renal ImpairmentEXPERIMENTALParticipants with severe renal impairment defined as having a creatinine clearance test value of \<30 mL/min/1.73 m\^2 or end stage renal disease on hemodialysis. Participants receive a single subcutaneous dose of PegIFN-2b, 4.5 μg/kg.

Interventions

NameTypeDescription
PegIFN-2bDRUGPegIFN-2b (1.5 μg/kg/week subcutaneously)
RBVDRUGRibavirin (600-1400 mg/day, orally, divided into two daily doses)
Placebo to BoceprevirDRUGPlacebo to boceprevir (orally, three times per day)
BoceprevirDRUGBoceprevir (800 mg, orally, three times per day)
PegIFN-2b (Sylatron®)DRUGSingle 4.5 μg/kg dose
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo

Inclusion Criteria: * \>=18 and \<=65 years of age * Body weight \>=40 and \<=125 kg * Documented history of HIV infection for greater than 6 months prior to Day 1 * On an optimized anti-retroviral treatment regimen (OTR) with stable HIV disease with CD4 \>=200 cells/µL and HIV-1 RNA viral load \<5...

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Frequently asked questions about PegIFN-2b

What is PegIFN-2b?

PegIFN-2b is an investigational pegylated interferon therapy developed by Merck & Company, Inc. (MRK). It has been studied in HIV Infections and Renal Insufficiency. The drug is in Phase 2 clinical development and has not been approved by the FDA.

What is PegIFN-2b used for?

PegIFN-2b has been studied for the treatment of HIV Infections and Renal Insufficiency. It is an investigational agent and is not approved for any indication. Clinical testing has included patients with HIV and hepatitis C coinfection as well as individuals with renal impairment.

Who makes PegIFN-2b?

PegIFN-2b is developed by Merck & Company, Inc., which trades on the New York Stock Exchange under the ticker symbol MRK. Merck is the sponsor of the clinical trials evaluating this investigational therapy.

What phase is PegIFN-2b in?

PegIFN-2b is in Phase 2 clinical development. It has not been approved by the FDA and remains investigational. The Phase 2 study has been completed, and no active trials are currently listed for this drug.

What clinical trials is PegIFN-2b in?

PegIFN-2b has been evaluated in two completed clinical trials. NCT00959699 was a Phase 2b safety and efficacy study in patients coinfected with HIV and hepatitis C, enrolling 99 participants. NCT01432535 was a Phase 1 pharmacokinetic study in participants with moderate and severe renal impairment, enrolling 25 participants.

Is PegIFN-2b the same as Sylatron?

PegIFN-2b is also known as Sylatron. Both names refer to the same pegylated interferon alfa-2b product developed by Merck & Company, Inc. (MRK).