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HLA associations with leukemia.

M M Bortin, J D'Amaro, F H Bach

|July 1, 1987

Summary

Certain Human Leukocyte Antigen (HLA) types, specifically Cw3 and Cw4, are associated with increased leukemia risk. Conversely, HLA Aw19 may indicate a decreased susceptibility to leukemia in Caucasoids.

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Area of Science:

Immunogenetics
Hematology
Human Leukocyte Antigen (HLA) system

Background:

The Human Leukocyte Antigen (HLA) system plays a crucial role in immune response.
Genetic variations in HLA antigens are implicated in various diseases, including cancers.
Understanding HLA associations with leukemia could reveal insights into disease susceptibility.

Purpose of the Study:

To investigate the association between specific HLA antigen frequencies and leukemia in a large Caucasoid cohort.
To identify potential HLA markers linked to increased or decreased susceptibility to different types of leukemia.

Main Methods:

Determined the frequencies of 35 HLA A, B, C, and DR antigens in 1,834 patients with leukemia.
Compared antigen frequencies in leukemic patients with those in published control populations.
Utilized statistical analysis, including relative risk and adjusted P values, to assess significance.

Main Results:

Significantly elevated frequencies of HLA-Cw3 were observed in patients with acute lymphoblastic leukemia (ALL), acute myelogenous leukemia (AML), and chronic myelogenous leukemia (CML).
HLA-Cw4 frequencies were also elevated across all studied leukemia types (ALL, AML, CML).
HLA-Aw19 frequency was significantly decreased in patients with AML and CML, suggesting a protective effect.

Conclusions:

HLA-Cw3 and HLA-Cw4 may serve as genetic markers associated with increased susceptibility to leukemia.
HLA-Aw19 may be a marker for decreased susceptibility to certain types of leukemia.
These findings highlight the potential role of specific HLA alleles in leukemia development.

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