Effectiveness of Palifermin in Increasing CD4 Counts in Treatment-Experienced HIV Infected Adults
Palifermin is a modified version of a naturally occurring human growth factor that is currently approved by the FDA to treat blood cancers. The purpose of this study is to determine whether palifermin can increase CD4 counts in treatment-experienced HIV infected adults.
Antiretroviral therapy (ART) has dramatically improved the clinical outcome for HIV infected adults; however, some people on potent ART experience poor recovery of CD4 counts despite maximum suppression of viral load. Such uncontrolled HIV infection is associated with the reduced ability by the human body to create new T cells (or thymopoiesis). HIV infected adults experiencing reduced thymopoiesis are at increased risk of clinical disease progression.
The thymus is the primary site for CD4 cell development; research suggests that keratinocyte growth factor (KGF) may enhance thymus activity in individuals who exhibit reduced thymopoiesis. Palifermin is a modified version of the naturally occurring KGF that is approved to treat people with hematologic malignancies. The purpose of this study is to evaluate the safety and efficacy of palifermin in increasing CD4 counts, through enhanced thymopoiesis, in treatment-experienced HIV infected adults with suppressed viral loads but low CD4 counts.
This study will last 24 weeks. Participants will be randomly assigned to one of four arms:
- Arm 1 participants will receive placebo
- Arm 2 participants will receive palifermin 20 mcg/kg
- Arm 3 participants will receive palifermin 40 mcg/kg
- Arm 4 participants will receive palifermin 60 mcg/kg
Participants will receive intravenous doses of their assigned intervention on Days 1, 2, and 3. All participants must remain on their current ART regimen for the duration of the study. ART will not be provided by the study. There will be six study visits, and they will occur at Weeks 1, 2, 4, 8, 12, and 24. All visits will include a targeted physical exam and blood and urine collection.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver), Primary Purpose: Treatment
Palifermin, Palifermin placebo
UCLA School of Medicine; CARE Ctr.
National Institute of Allergy and Infectious Diseases (NIAID)
Results (where available)
- Source: http://clinicaltrials.gov/show/NCT00376935
- Information obtained from ClinicalTrials.gov on July 15, 2010
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Medical and Biotech [MESH] Definitions
Inflammation of brain parenchymal tissue as a result of viral infection. Encephalitis may occur as primary or secondary manifestation of TOGAVIRIDAE INFECTIONS; HERPESVIRIDAE INFECTIONS; ADENOVIRIDAE INFECTIONS; FLAVIVIRIDAE INFECTIONS; BUNYAVIRIDAE INFECTIONS; PICORNAVIRIDAE INFECTIONS; PARAMYXOVIRIDAE INFECTIONS; ORTHOMYXOVIRIDAE INFECTIONS; RETROVIRIDAE INFECTIONS; and ARENAVIRIDAE INFECTIONS.
Viral infections of the leptomeninges and subarachnoid space. TOGAVIRIDAE INFECTIONS; FLAVIVIRIDAE INFECTIONS; RUBELLA; BUNYAVIRIDAE INFECTIONS; ORBIVIRUS infections; PICORNAVIRIDAE INFECTIONS; ORTHOMYXOVIRIDAE INFECTIONS; RHABDOVIRIDAE INFECTIONS; ARENAVIRIDAE INFECTIONS; HERPESVIRIDAE INFECTIONS; ADENOVIRIDAE INFECTIONS; JC VIRUS infections; and RETROVIRIDAE INFECTIONS may cause this form of meningitis. Clinical manifestations include fever, headache, neck pain, vomiting, PHOTOPHOBIA, and signs of meningeal irritation. (From Joynt, Clinical Neurology, 1996, Ch26, pp1-3)
Infections with viruses of the family PARAMYXOVIRIDAE. This includes MORBILLIVIRUS INFECTIONS; RESPIROVIRUS INFECTIONS; PNEUMOVIRUS INFECTIONS; HENIPAVIRUS INFECTIONS; AVULAVIRUS INFECTIONS; and RUBULAVIRUS INFECTIONS.
Misunderstanding among individuals, frequently research subjects, of scientific methods such as randomization and placebo controls.
Pathogenic infections of the brain, spinal cord, and meninges. DNA VIRUS INFECTIONS; RNA VIRUS INFECTIONS; BACTERIAL INFECTIONS; MYCOPLASMA INFECTIONS; SPIROCHAETALES INFECTIONS; fungal infections; PROTOZOAN INFECTIONS; HELMINTHIASIS; and PRION DISEASES may involve the central nervous system as a primary or secondary process.