This study will evaluate the safety of a new experimental drug, IL-7, in people with HCV infection resistant after 12 weeks of bi-therapy.
This is a Phase I inter-patient dose-escalation study assessing weekly doses of Interleukin-7 (CYT107) in adult patients infected by Genotype 1 Virus of Hepatitis C and resistant to standard treatment with Peg-Interferon and Ribavirin (biotherapy)after 12 weeks of this standard bi-therapy. The dose escalation is aimed at establishing the safety of a biologically active doses of CYT107 added to the combination therapy of pegylated interferon-alpha and ribavirin. At each dose level, study patients will receive a subcutaneous administration of CYT107 per week for a total of 4 administrations. Groups of 3 to 6 patients will be entered at each dose level of CYT107. Four dose levels are planned. Eligible patients will a cycle of four weekly injections at a defined dose level in addition to the bi-therapy. Standard bi-therapy will continue 4 weeks after CYT107 treatment discontinuation. The duration of study is approximately 11 weeks including screening period. Participants have 1 hospitalization overnight and 8 clinic visits. The four administrations are sub-cutaneous and are given as a shot under the skin in the arm or abdomen or leg. During the study visits the following may be done: * Medical history, physical examination, blood tests every visit. * Electrocardiogram (EKG) * Chest x-ray study * Liver/spleen imaging * Blood sample collections at frequent intervals * Urine tests several times during the study.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
10
4dose levels: 3, 10, 20 and 30µg/kg. 4 administrations, 1 per week
Hopital Jean Verdier
Bondy, France
Beaujon Hospital
Clichy, France
Hopital Kremlin Bicêtre
Le Kremlin-Bicêtre, France
Hopital Civil
Strasbourg, France
Safety of biologically active doses of CYT107 added to a standard bi-therapy in patients with a chronic infection by a genotype 1 Hepatitis C Virus (HCV) not responding to this combination therapy 12 weeks after its initiation.
Time frame: 8 weeks after start of CYT107
Pharmacokinetics and pharmacodynamics of CYT107 in this patients population.
Time frame: As primary
potential anti-viral effect of CYT107
Time frame: As primary
immune specific response to HCV
Time frame: As primary
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Azienda Ospedaliero-Universitaria, Policlinico Sant'Orsola Malpighi
Bologna, Italy
San Raffaele Scientific Institute
Milan, Italy
University of Zurich
Zurich, Switzerland