Association of HLA class I type with prevalence and outcome of patients with acute myeloid leukemia and mutated nucleophosmin
| Authors | |
|---|---|
| Year of publication | 2018 |
| Type | Article in Periodical |
| Magazine / Source | Plos one |
| MU Faculty or unit | |
| Citation | |
| Doi | http://dx.doi.org/10.1371/journal.pone.0204290 |
| Keywords | Acute myeloid leukemia |
| Description | Acute myeloid leukemia with mutated nucleophosmin (NPMc+AML) forms a distinct AML subgroup with better prognosis which can potentially be associated with immune response against the mutated nucleophosmin (NPM). As the T-cell-mediated immunity involves antigen presentation on HLA class I molecules, we hypothesized that individuals with suitable HLA type could be less prone to develop NPMc+AML. We compared HLA class I distribution in NPMc+AML patient cohort (398 patients from 5 centers) with the HLA allele frequencies of the healthy population and found HLA-A*02, B*07, B*40 and C*07 underrepresented in the NPMc+AML group. Presence of B*07 or C*07:01 antigen was associated with better survival in patients without concomitant FLT3 internal tandem duplication. Candidate NPM-derived immunopeptides were found for B*40 and B*07 using prediction software tools. Our findings suggest that a T-cell-mediated immune response could actually explain better prognosis of NPMc+ patients and provide a rationale for attempts to explore the importance of immunosuppressive mechanisms in this AML subgroup. |
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