Type 2 & other diabetes

Differences in Inflammatory Pathways Between Dutch South Asians vs Dutch Europids With Type 2 Diabetes

J Clin Endocrinol MetabPublished Secondary analysis of 2 randomised controlled trials

Authors' conclusion

South Asian patients with T2D show a more activated IFN-signaling pathway compared to Europid patients with T2D, which is more pronounced in women than men. We speculate that a more activated IFN-signaling pathway may contribute to the more rapid progression of T2D in South Asian compared with Europid individuals.

Study context

Population
Dutch South Asian and Dutch Europid patients with T2D
Participants
45 vs 44
Comparison
Dutch South Asian vs Dutch Europid patients with T2D
  • South Asiansn = 45
  • Europidsn = 44reference
Primary endpoint
mRNA transcripts of 182 immune genes (microfluidic quantitative PCR) in fasted whole-blood; ingenuity pathway analyses

Primary result

As reported in the abstract

Immune gene mRNA expression, South Asians vs Europids

Higher messenger RNA (mRNA) levels of B-cell markers (CD19, CD79A, CD79B, CR2, CXCR5, IGHD, MS4A1, PAX5) in South Asians

all fold change > 1.3, false discovery rate [FDR] < 0.008

Higher Interferon (IFN)-signaling genes (CD274, GBP1, GBP2, GBP5, FCGR1A/B/CP, IFI16, IFIT3, IFITM1, IFITM3, TAP1) in South Asians

all FC > 1.2, FDR < 0.05

IFN signaling pathway was the top canonical pathway in South Asians

z score 2.6

P < .001

Further findings

Plasma IFN-γ levels

Higher plasma IFN-γ in South Asians
FC = 1.5, FDR = 0.01

Ethnic difference in gene expression by sex

Genes differing by ethnicity in women
20/182 [11%]
Genes differing by ethnicity in men
2/182 [1%]

Original publication

Differences in Inflammatory Pathways Between Dutch South Asians vs Dutch Europids With Type 2 Diabetes. J Clin Endocrinol Metab. Published 20 October 2022. doi:10.1210/clinem/dgac598

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