Type 1 diabetes

Human leukocyte antigen (HLA) investigation in ICI-induced T1D and isolated ACTH deficiency including meta-analysis

Eur J EndocrinolPublished Genetic association study with meta-analysis

Authors' conclusion

This study revealed specific HLA signatures associated with ICI-T1D and ICI-IAD. Moreover, HLA-DRB1*15:02-DRB1*06:01, an ICI-IAD-susceptible HLA haplotype, coincides with the ICI-T1D-protective HLA haplotype, suggesting that the presence of DRB1*15:02-DRB1*06:01 may protect against the co-occurrence of T1D in patients with ICI-IAD.

Study context

Population
Patients with ICI-induced T1D and/or isolated ACTH deficiency
Participants
22 / 14 / 11
Comparison
HLA signatures in ICI-T1D vs ICI-IAD vs ICI-T1D/IAD
  • ICI-T1Dn = 22
  • ICI-IADn = 14
  • ICI-T1D/IADn = 11
Outcome
Frequencies of HLA signatures
Methodological detailsincludes cases from nationwide reports
  • Includes cases from nationwide reports

Pooled result

As reported in the abstract

HLA associations
  • ICI-T1D: HLA-DRB1*09:01-DQB1*03:03 and DQA1*03:02 (in linkage disequilibrium with DRB1*09:01-DQB1*03:03 and DRB1*13:02-DQB1*06:04) susceptible
  • ICI-T1D: DRB1*15:02-DQB1*06:01 protective
  • ICI-IAD: DPB1*09:01, C*12:02-B*52:01 and DRB1*15:02-DRB1*06:01 (strong linkage disequilibrium) associated with susceptibility
  • ICI-T1D/IAD: DRB1*15:02-DRB1*06:01 not detected

Original publication

HLA investigation in ICI-induced T1D and isolated ACTH deficiency including meta-analysis. Eur J Endocrinol. Published 25 June 2024. doi:10.1093/ejendo/lvae081

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