Proposed CD4(+) T-cell criteria for staging human immunodeficiency virus-infected Chinese adults

Area of Science:

• Immunology
• Infectious Diseases
• Public Health

Background:

• Current staging of human immunodeficiency virus (HIV) relies on CD4(+) T lymphocyte (CD4) counts.
• Accurate prognostic staging is crucial for effective treatment and prophylaxis strategies in HIV disease.
• Existing staging criteria may not be optimal for all ethnic populations.

Purpose of the Study:

• To correlate clinical events and CD4 changes in ethnic Chinese adults with HIV in Hong Kong.
• To propose and evaluate new baseline CD4 stratification criteria for staging HIV-infected Chinese adults.
• To compare the predictive power of proposed criteria against existing CDC staging criteria.

Main Methods:

• Correlation of clinical course and CD4 changes in consecutive HIV-infected ethnic Chinese adults.
• Utilized death as the endpoint to estimate survival proportions and death incidences.
• Compared proposed CD4 stratification criteria (>220/microl, 100-220/microl, <100/microl) with CDC criteria.

Main Results:

• The proposed baseline CD4 stratification criteria demonstrated better discrimination and predictive power than CDC criteria for the study population.
• The new criteria showed potential for improved anti-retroviral treatment and opportunistic infection prophylaxis decisions.
• Specific proposed criteria: Stage 1 (>220/microl, >12% lymphocytes), Stage 2 (100-220/microl, 6-12% lymphocytes), Stage 3 (<100/microl, <6% lymphocytes).

Conclusions:

• Proposed CD4 staging criteria offer superior prognostic value for HIV-infected ethnic Chinese adults in Hong Kong.
• These refined criteria can enhance clinical management, including treatment and prophylaxis decisions.
• Further assessment is warranted to confirm the impact of these criteria on patient outcomes.