Active clinical trials for "HIV Infections"

The purpose of this clinical research study is to provide atazanavir to patients infected with human immunodeficiency virus (HIV) whose antiviral medications are no longer working to control HIV activity within the body and who are unable to create a new treatment regimen using other available anti-HIV drugs, because of either side effects or treatment failure previously taken. The safety of this treatment will also be studied.

The purpose of this study is to determine the best way to administer the candidate HIV vaccine, ALVAC HIV-1 (vCP205).

This protocol presents the rationale, 25-year historical review, and methods for multidisciplinary, low-risk studies of individuals referred to the NCI Viral Epidemiology Branch (VEB). Referrals are generally for unusual types of cancer or related conditions, known, or suspected to be related to viruses. Kaposi's sarcoma in two homosexual men evaluated in 1981 is a classic example. These referral cases provide the basis for pilot studies that generate hypotheses, the development of protocols for formal investigations of promising leads, and help to set priorities for VEB. A VEB investigator who is a Staff Member at the NIH Clinical Center, interviews each subject, performs a physical examination, draws a blood sample, and, when appropriate for the disease or virus under study, obtains other clinically indicated biological specimens, such as urine, sputum, saliva, tears, semen, Pap smear, or cervical, anal, oral, or nasal swabs. On occasion, other relatively non-invasive studies may be indicated. Skin testing with conventional, licensed antigens for assessment of cellular immunity may be performed, and skin lesions may be biopsied or excised. Tumor or other tissue biopsies may be obtained when biopsy or surgery is clinically indicated for other reasons. Otherwise no surgery is performed, and no therapy is administered. Clinical referral to other components of NCI, NIH, or the private sector are made as needed. The biological specimens are frozen or otherwise preserved to be batch tested in current assays or future assays that will be developed. Such laboratory testing is performed either at VEB's own support laboratory, or collaboratively in other NCI, NIH, or extramural laboratories that have the needed expertise for the disease or virus under study. Occasionally, repeated or more long-term evaluation is required. More often, a single evaluation in the NIH outpatient clinic, or either at a collaborating physician's office or other suitable site in the field, is sufficient. The VEB investigator provides counseling relevant to the virus or disease under study, and about the interim study results. He or she makes appropriate referral if needed (e.g., to the Genetic Epidemiology Branch for genetic counseling). Clinically relevant results and the VEB investigator's interpretation of these results, are provided in writing to the subject's primary caregiver. Confidentially of the information that is obtained is carefully protected. The results of the study are summarized for publication in the peer review literature.

This study is to understand how to improve retention in care and treatment services to HIV positive pregnant women and their babies in Swaziland. The investigators will evaluate outcomes of patients who are lost-to-follow-up (LTF) under a new approach for prevention of mother-to-child (PMTCT) called Option B+, where all HIV positive pregnant women initiate lifelong antiretroviral therapy (ART) regardless of their disease stage. The goal is to understand the outcomes of patients who are LTF from care, and the reasons for disengagement from care in the context of PMTCT in order to inform efforts to improve retention in care among patients under Option B+.

The decentralization study will describe children taking antiretroviral therapy (ART) at a larger health facility in the Eastern Cape province of South Africa, between the years of 2004-2013. The study will be conducted at Dora Nginza Hospital (DNH). The study will measure how many children stay in care and how many die, as well as their health status. The study will also compare whether children do better if they stay in care a large hospitals or if they get health care at smaller clinics. A second part of the study will find children in the community who have stopped coming for health care and find out what happened to them and what their health status is.

The purpose of this study is to evaluate the short, medium and long-term prognosis for newly diagnosed HIV patients.

The POWER Cohort study is a PrEP implementation project to demonstrate Pre-exposure prophylaxis (PrEP) delivery for young women in Cape Town and Johannesburg, South Africa and Kisumu, Kenya.

HIV infection is associated to premature decline of serum testosterone. However, prevalence and biochemical characterization of hypogonadism in HIV-infected men are still to be well defined. HIV-infection is strongly associated to erectile dysfunction in men, but preliminary data suggest that it is poorly associated with serum testosterone in this context.

Current British HIV Association (BHIVA) guidelines recommend annual cervical screening (with a cervical smear) for women living with HIV (WLWH). NHS guidelines for women in England will, however, change soon. Women will initially be tested for human papilloma virus (HPV), a virus which causes virtually all cervical cancer. Only those who are infected with HPV will then undergo the smear testing. The BHIVA guidelines, however, taking the view that HIV infection (and its ability to weaken the immune system) increases the risk of persistent HPV infection and of cancer in those who are infected, consider safer for all WLWH to go straight to annual smear testing. Most WLWH in the UK are now receiving treatment which protects their immune system - this suggests that less WLWH could be HPV infected. The identification of a group of WLWH who could benefit from less frequent screening could improve quality of life, and allow the NHS to reduce unnecessary tests and costs. A large study is needed to collect robust evidence that would support changes to standard practice. Before investing huge resources, the investigators need to know if a study would be feasible, conducting a pilot study on 70 WLWH aged 25-64, regularly attending clinics for HIV care. Participants will be asked to complete an entry survey and they will undergo routine cervical smears (baseline and after 1 year). At baseline, after six months, and one year women will take their own vaginal swabs for the detection of HR-HPV. An exit questionnaire will be undertaken at the last visit.

Clinical study: Methods: observational transversal two-arm cohort study including adults living with HIV (PLHIV) and HIV negative subjects (HIV-) at intermediate cardiovascular risk. No study specific interventions were performed. Participants: consecutively recruited at two large public hospitals in Paris and Annecy, France where participants were referred for routine cardiac risk stratification. Recruitment: was from June 2013 until April 2016. Data: anonymous study data were collected during the ambulatory visit. No follow-up was conducted. Study objectives: Primary: compare coronary artery calcification (CAC) score between PLHIV and HIV- in order to bridge gaps in current knowledge. Secondary: assess parameters linked to CAC score including predictors and their prevalence, association with carotid/femoral atherosclerosis, and cardiovascular risk scores (ASCVD and HEART score). Study hypotheses: Primary: CAC scores would not be different between PLHIV and HIV- Secondary: prevalence of traditional CV risk factors would be lower in PLHIV but that HIV-related nontraditional CV risk factors (including lower grade chronic inflammation, immune dysregulation, and ARV exposure duration) would be associated with higher CAC scores and higher CV risk scores Study Rational: PLHIV have an increased risk of atherosclerotic cardiovascular events compared to the general population. Primary prevention for PLHIV is important but challenging as traditional cardiovascular risk scores do not account for HIV-related factors. Computed tomography coronary artery calcium (CAC) score using the Agatston score is useful for detecting and quantifying coronary calcifications. In the general population, CAC score is predictive of future cardiovascular events.