View clinical trials related to Immunologic Deficiency Syndromes.
Filter by:Researchers are working on ways to treat SCID patients who don't have a matched brother or sister. One of the goals is to avoid the problems that happen with stem cell transplant from parents and unrelated people, such as repeat transplants, incomplete cure of the immune system, exposure to chemotherapy, and graft versus host disease. The idea behind gene transfer is to replace the broken gene by putting a piece of genetic material (DNA) that has the normal gene into the child's cells. Gene transfer can only be done if we know which gene is missing or broken in the patient. For SCID-X1, gene transfer has been done in the laboratory and in two previous clinical trials by inserting the normal gene into stem cells from bone marrow. The bone marrow is the "factory" inside the bones that creates blood and immune cells. So fixing the gene in the bone marrow stem cells should fix the immune problem, without giving chemotherapy and without risk of graft versus host disease, because the child's own cells are used, rather than another person's. Out of the 20 subjects enrolled in the two previous trials, 18 are alive with better immune systems after gene transfer. Two of the surviving subjects received gene corrected cells over 10 years ago. Gene transfer is still research for two reasons. One is that not enough children have been studied to tell if the procedure is consistently successful. Of the 20 children enrolled in the previous two trials, one child did not have correction of the immune system, and died of complications after undergoing stem cell transplant. The second important reason why gene transfer is research is that we are still learning about the side effects of gene transfer and how to do gene transfer safely. In the last two trials, 5 children have experienced a serious side effect. These children developed leukemia related to the gene transfer itself. Leukemia is a cancer of the white blood cells, a condition where a few white blood cells grow out of control. Of these children, 4 of the 5 have received chemotherapy (medication to treat cancer) and are currently in remission (no leukemia can be found by sensitive testing), whereas one died of gene transfer-related leukemia.
This study is designed to compare the efficacy and safety of simplifying therapy from a regimen of atazanavir (ATV) + ritonavir (RTV) + tenofovir/emtricitabine (TDF/FTC) to a regimen of ATV + abacavir sulfate/lamivudine (ABC/3TC) without RTV in virologically suppressed, HIV-1 infected, HLA-B*5701 negative subjects for 48 weeks.
In this study, approximately 16 subjects will receive raltegravir 400mg twice daily for 5 days (Treatment A) followed by a washout period. In Period 2, subjects will receive GSK2248761 200mg once daily for 5 days (Treatment B). There will be no wash out between Period 2 and 3. Subjects will then be administered raltegravir 400mg twice daily in combination with GSK2248761 200mg once daily (Treatment C) for 5 days. Subjects will be housed in the unit for the duration of the study. Safety evaluations and serial PK samples will be collected during each treatment period. A follow-up visit will occur 7-14 days after the last dose of study drug.
GSK1349572 is an integrase inhibitor that is currently in Phase 2 clinical trials for the treatment of HIV infection. As GSK1349572 development progresses, it may be dosed with non-nucleoside HIV reverse transcriptase inhibitors (NNRTIs) including efavirenz (EFV, Sustiva). Efavirenz is a known inducer of CYP3A4. GSK1349572 is primarily metabolized via UGT1A1, however it also has a CYP component to its metabolism, thus a drug interaction between GSK1349572 and EFV is likely. A previous study showed that another NNRTI, etravirine which is also a known inducer of CYP3A and UGT, reduced GSK1349572 exposure significantly. GSK1349572 is not an inhibitor or inducer of CYP3A and is not expected to have impact on pharmacokinetics (PK) of EFV. This study will investigate the dose proportionality between single doses of 50mg and 100mg of GSK1349572 and will compare steady-state plasma PK, safety and tolerability of GSK1349572 50 mg every 24h (q24h) with and without efavirenz 600 mg q24h. Approximately 12 subjects will receive a single dose of GSK1349572 100 mg (Treatment A) in Period 1 followed by a washout of greater than or equal to 6 days. In Period 2 subjects will receive GSK1349572 50mg q24h for 5 days (Treatment B). Subjects will then be administered GSK1349572 50mg q24h in the morning in combination with EFV 600 mg q24h (Treatment C) in the evening for 14 days in Period 3. There will be no washout between Periods 2 and 3. Safety evaluations and serial PK samples for GSK1349572 will be collected during each treatment period. A follow-up visit will occur 7-14 days after the last dose of study drug. This study will be conducted at one center in the US, with healthy adult male and female subjects.
This is a single-center, randomized, two part, open-label, crossover study in healthy adult subjects. Part A will evaluate the relative bioavailability of two new tablet formulations compared to the current tablet formulation of GSK1349572 at 50 mg administered as single doses each comprising of two 25 mg tablets. Pharmacokinetic samples from Part A will be analyzed and, if at least one of the new formulations meets appropriate criteria and is selected, Part B will be a single-sequence design conducted to evaluate food effect of the selected new tablet formulation at one dose level. A subset of subjects enrolled in Part A will continue in Part B. Safety evaluations and serial PK samples will be collected during each treatment period. A follow-up visit will occur 7-28 days after the last dose of study drug.
The objective of this study is to observe and collect data on the usage, dosing, tolerability, and effectiveness of Kaletra (lopinavir/ritonavir) tablets in human immunodeficiency virus (HIV)-infected patients. In some patients, the study is to show the impact on tolerability of changing therapy to Kaletra tablets from other regimens.
The objective of this study is to determine whether 12 weeks of mesalamine therapy added to a standard HIV treatment decreases systemic immune activation and inflammation in HIV-infected patients, possibly resulting in better recovery of the immune system. The study hypothesis is that decreasing inflammation directly in the gut may decrease both of these potential causes of chronic inflammation, potentially resulting in an immunologic benefit.
The purpose of this study is to determine if prophylactic cotrimoxazole makes severe anemia or neutropenia more common in infants exposed to maternal HIV and combination antiretroviral therapy.
Long term observation of patients under lopinavir/ritonavir containing therapy
In Serono Study 24380, the antecedent protocol to Study 25373, patients were randomly assigned in a 3.0-to-1.0 ratio to Groups A and B. All patients in Group A received recombinant human growth hormone (Serostim®) 4 mg daily (the "induction" phase) for the first 12 weeks, and then were re-randomized to receive either placebo or Serostim 2 mg on alternate days (roughly equivalent to 1 mg daily) during Weeks 12-36 (the "maintenance" phase). All patients in Group B initially received placebo from baseline to Week 24, and then received Serostim® 4 mg daily from Weeks 24 to 36 (Grunfeld, 2007). In the follow-up Study 25373, any subject who was enrolled in Serono Study 24380 and was assigned to Group A, who fully completed all study visits without a major protocol violation, was eligible to enroll to receive re-treatment with Serostim at a dose of 4 mg daily for 12 weeks. During study 25373, safety was monitored by recording of adverse events and measurement of urinalysis and laboratory blood tests to assess fasting glucose, fasting insulin, and routine biochemistry and hematology parameters. At Week 12 or at the time of study termination, subjects underwent re-assessment of body composition via anthropometry measurements and dual photon absorptiometry (DXA) scanning. In addition, at study termination, measurements of insulin-like growth factor I (IGF-I), insulin-like growth binding protein 3 (IGFBP-3), fasting lipid profile, and oral glucose tolerance testing were obtained.