Kholoud Porter

Kholoud Porter

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Kholoud Porter

Institute for Global Health, University College London, London, UK

Research Focus & Metrics

Academic Career Length

40Years (1987-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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15 May 2014 in AIDS
Verified
Journal Article
Open access
MMMargaret T. May
Margaret T. May
MGMark Gompels
Mark Gompels
VDValerie Delpech
Valerie Delpech
KPKholoud Porter
Kholoud Porter
COChloe Orkin
Chloe Orkin
CSCaroline Anne Sabin
Caroline Anne Sabin
The objective of this study is to estimate life expectancies of HIV-positive patients conditional on response to antiretroviral therapy (ART). Patients aged more than 20 years who started ART during 2000-2010 (excluding IDU) in HIV clinics contributing to the UK CHIC Study were followed for mortality until 2012. We determined the latest CD4 cell count and viral load before ART and in each of years 1-5 of ART. For each duration of ART, life tables based on estimated mortality rates by sex, age, latest CD4 cell count and viral suppression (HIV-1 RNA <400 copies/ml), were used to estimate expected age at death for ages 20-85 years. Of 21 388 patients who started ART, 961 (4.5%) died during 110 697 person-years. At start of ART, expected age at death [95% confidence interval (CI)] of 35-year-old men with CD4 cell count less than 200, 200-349, at least 350 cells/μl was 71 (68-73), 78 (74-82) and 77 (72-81) years, respectively, compared with 78 years for men in the general UK population. Thirty-five-year-old men who increased their CD4 cell count in the first year of ART from less than 200 to 200-349 or at least 350 cells/μl and achieved viral suppression gained 7 and 10 years, respectively. After 5 years on ART, expected age at death of 35-year-old men varied from 54 (48-61) (CD4 cell count <200 cells/μl and no viral suppression) to 80 (76-83) years (CD4 cell count ≥350 cells/μl and viral suppression). Successfully treated HIV-positive individuals have a normal life expectancy. Patients who started ART with a low CD4 cell count significantly improve their life expectancy if they have a good CD4 cell count response and undetectable viral load.

2 July 2008 in JAMA
Verified
Journal Article
Closed access
PDF file
KBKrishnan Bhaskaran
Krishnan Bhaskaran
OHOsamah Hamouda
Osamah Hamouda
MSMette Sannes
Mette Sannes
FBFaroudy Boufassa
Faroudy Boufassa
AJAnne M. Johnson
Anne M. Johnson
KPKholoud Porter
Kholoud Porter
Research from JAMA — Changes in the Risk of Death After HIV Seroconversion Compared With Mortality in the General Population

22 June 2016 in BMC Medicine
Verified
Journal Article
Open access
PDF file
JLJeffrey Lazarus
Jeffrey Lazarus
KSKelly Safreed-Harmon
Kelly Safreed-Harmon
SBSimon E. Barton
Simon E. Barton
DCDominique Costagliola
Dominique Costagliola
NDNikos Dedes
Nikos Dedes
JRJürgen Rockstroh
Jürgen Rockstroh
In 2016, the World Health Organization (WHO) adopted a new Global Health Sector Strategy on HIV for 2016–2021. It establishes 15 ambitious targets, including the ‘90-90-90’ target calling on health systems to reduce under-diagnosis of HIV, treat a greater number of those diagnosed, and ensure that those being treated achieve viral suppression. The WHO strategy calls for person-centered chronic care for people living with HIV (PLHIV), implicitly acknowledging that viral suppression is not the ultimate goal of treatment. However, it stops short of providing an explicit target for health-related quality of life. It thus fails to take into account the needs of PLHIV who have achieved viral suppression but still must contend with other intense challenges such as serious non-communicable diseases, depression, anxiety, financial stress, and experiences of or apprehension about HIV-related discrimination. We propose adding a ‘fourth 90’ to the testing and treatment target: ensure that 90 % of people with viral load suppression have good health-related quality of life. The new target would expand the continuum-of-services paradigm beyond the existing endpoint of viral suppression. Good health-related quality of life for PLHIV entails attention to two domains: comorbidities and self-perceived quality of life. Health systems everywhere need to become more integrated and more people-centered to successfully meet the needs of virally suppressed PLHIV. By doing so, these systems can better meet the needs of all of their constituents – regardless of HIV status – in an era when many populations worldwide are living much longer with multiple comorbidities.

1 May 2011 in The Lancet Infectious Diseases
Verified
Journal Article
Closed access
LWLinda Wittkop
Linda Wittkop
HGHuldrych Günthard
Huldrych Günthard
FWFrank de Wolf
Frank de Wolf
DDDavid Dunn
David Dunn
ACAlessandro Cozzi-Lepri
Alessandro Cozzi-Lepri
GCGeneviève Chêne
Geneviève Chêne

1 April 2000 in The Lancet
Verified
Journal Article
Closed access
ABA Babiker
A Babiker
SDS Darby
S Darby
DAD De Angelis
D De Angelis
DKD Kwart
D Kwart
KPK Porter
K Porter
CICgaids Incubation
Cgaids Incubation

11 October 2011 in BMJ
Verified
Journal Article
Open access
PDF file
MMMargaret May
Margaret May
MGMark Gompels
Mark Gompels
VDValerie Delpech
Valerie Delpech
KPKholoud Porter
Kholoud Porter
FPFrank Post
Frank Post
CSCaroline Anne Sabin
Caroline Anne Sabin
Objectives To estimate life expectancy for people with HIV undergoing treatment compared with life expectancy in the general population and to assess the impact on life expectancy of late treatment, defined as CD4 count <200 cells/mm3 at start of antiretroviral therapy. Design Cohort study. Setting Outpatient HIV clinics throughout the United Kingdom. Population Adult patients from the UK Collaborative HIV Cohort (UK CHIC) Study with CD4 count ≤350 cells/mm3 at start of antiretroviral therapy in 1996-2008. Main outcome measures Life expectancy at the exact age of 20 (the average additional years that will be lived by a person after age 20), according to the cross sectional age specific mortality rates during the study period. Results 1248 of 17 661 eligible patients died during 91 203 person years’ follow-up. Life expectancy (standard error) at exact age 20 increased from 30.0 (1.2) to 45.8 (1.7) years from 1996-9 to 2006-8. Life expectancy was 39.5 (0.45) for male patients and 50.2 (0.45) years for female patients compared with 57.8 and 61.6 years for men and women in the general population (1996-2006). Starting antiretroviral therapy later than guidelines suggest resulted in up to 15 years’ loss of life: at age 20, life expectancy was 37.9 (1.3), 41.0 (2.2), and 53.4 (1.2) years in those starting antiretroviral therapy with CD4 count <100, 100-199, and 200-350 cells/mm3, respectively. Conclusions Life expectancy in people treated for HIV infection has increased by over 15 years during 1996-2008, but is still about 13 years less than that of the UK population. The higher life expectancy in women is magnified in those with HIV. Earlier diagnosis and subsequent timely treatment with antiretroviral therapy might increase life expectancy.