The Effects of Ageing on the 'Pharmacokinetic and Clinical Observations in People Over Fifty'

Multicentre, prospective, observational study over 3 years.

The study will describe the impact of advancing age on the experience of living with HIV in England and Ireland. To address this cohorts of HIV-positive people aged >50 and <50 years (as well as demographically matched HIV-negative people aged >50 years) will be established.

• To analyse the incidence and outcomes of co-morbidities in older-HIV-positive people and their relationship with demographic/clinical factors.
• To evaluate associations between antiretroviral drug concentrations and age, and to assess the potential impact of age on drug efficacy, drug-drug interactions and co-morbidities.
• To contribute to the development and implementation of evidence-based recommendations for the clinical monitoring of older HIV-positive patients.

2000 will be recruited in all either white or black african individuals (self reported) 1000 will be Over 50 years of age and HIV positive, 500 will be under the age of 50 and will be HIV positive and 500 will be over the age of 50 and be HIV negative.

Inclusion criteria

Older HIV-positive cohort (n=1000):

• documented HIV infection
• age >50 years at study entry
• self defined white or black African ethnicity
• likely route of HIV acquisition via sexual exposure Either by male to male exposure if white or by heterosexual exposure if white or black African
• able to comprehend study patient information leaflet

-Younger HIV-positive cohort (n=500):

• documented HIV infection
• age <50 at study entry*
• self defined white or black African ethnicity
• likely route of HIV acquisition via sexual exposure Either by male to male exposure if white or by heterosexual exposure if white or black African.
• able to comprehend study patient information leaflet

• this group will comprise of at least 150 subjects in each of the following age groups: 20-29, 30-39, 40-49 years. Recruitment will be monitored by the Study Monitoring Team.

HIV-negative cohort (n=500):

• documented negative HIV test at screening
• age >50 years at study entry
• self defined white or black African ethnicity
• registered with a General Practitioner and gives permission for contact with that General Practitioner.

Exclusion criteria

• in the opinion of the investigator, those unable or unwilling to comply with the requirements of the study
• life expectancy less than 6 months