What does this research mean for the field?

Type 2 diabetes in high-risk Indigenous Americans groups into four established phenotypic clusters, with severe insulin-resistant (SIRD) and severe insulin-deficient (SIDD) clusters exhibiting higher risks of albuminuria and distinct polygenic risk profiles. Novelty: ClaimNovelty.CONFIRMATORY. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

What question did this study set out to answer?

The aim is to characterize diabetes clusters and their association with complications in Indigenous Americans and evaluate differences in polygenic risk scores.

June 7, 2026Diabetes

2403-P: Diabetes Clusters, Risk of Complications, and Differences in Partitioned Polygenic Risk Scores (PPRS) in Indigenous Americans

Q: What is the clinical evidence from this study?

Study design: Cohort. Population: Type 2 diabetes (n=447). Intervention: Severe insulin-resistant diabetes (SIRD) vs. Mild obesity-related diabetes (MOD). Primary outcome: Subsequent albuminuria (HR 2.12, 95% CI 1.21-3.71).

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Key result

Severe insulin-resistant diabetes linked to ~112% higher albuminuria risk versus mild obesity-related diabetes.

HR 2.12
95% CI 1.21-3.71
n=447

Why the study?

Clinical data-driven cluster analyses have identified distinct type 2 diabetes phenotypes, but evidence in high-risk populations is limited.

Do distinct diabetes clusters predict the risk of incident albuminuria and differ in polygenic risk scores in a high-risk Indigenous American population?

Population

447 participants with diabetes diagnosed within 1 year from a high-risk Indigenous population in Southwestern US

Comparison

Diabetes clusters (SIRD, SIDD, MARD) vs MOD

Design

Longitudinal study

Authors

MLMARIA JOSE RAMIREZ LUZURIAGAPhoenix (United States)EAElsa Vazquez ArreolaNational Institute of Diabetes and Digestive and Kidney Diseases WHWEN-CHI HSUEHPhoenix (United States)

Discussion

Member takes

Implication

May support cluster-based albuminuria risk assessment in Indigenous Americans; extends prior phenotypes to this population.

Key Points

The aim is to characterize diabetes clusters and their association with complications in Indigenous Americans and evaluate differences in polygenic risk scores.
Diabetes clusters were identified using the k-means algorithm on data from 447 participants diagnosed with diabetes.
Clusters were analyzed for associations with complications using hazard ratios.
Polygenic risk scores were derived from genome-wide association study data, with standardized differences calculated.
Four diabetes clusters were identified: severe insulin-resistant diabetes (19.7%), mild obesity-related diabetes (42.5%), severe insulin-deficient diabetes (10.1%), and mild age-related diabetes (27.7%).
Risk of albuminuria was higher in severe insulin-resistant diabetes (HR=2.12), severe insulin-deficient diabetes (HR=3.26), and mild age-related diabetes (HR=1.82) compared to mild obesity-related diabetes.
Differences in polygenic risk scores indicated higher β-cell dysfunction in severe insulin-resistant (Δ 0.22) and severe insulin-deficient diabetes (Δ 0.26) compared to mild obesity-related diabetes.

Study Design

Type

Cohort (n=447)

Structured PICO

Do distinct diabetes clusters predict the risk of incident albuminuria and differ in polygenic risk scores in a high-risk Indigenous American population?

Population

447 Indigenous American participants from the Southwestern US with diabetes diagnosed within 1 year.

Exposure

Classification into diabetes clusters (severe insulin-resistant diabetes [SIRD], mild obesity-related diabetes [MOD], severe insulin-deficient diabetes [SIDD], and mild age-related diabetes [MARD])

Comparator

Mild obesity-related diabetes (MOD) cluster

Outcome

Incident diabetes complications (albuminuria and severe albuminuria)surrogate

Main Result

Hazard Ratio: 2.12 (95% CI 1.21–3.71)

Phenotypic diabetes clusters in Indigenous Americans are similar to other populations, with severe insulin-resistant and severe insulin-deficient clusters carrying a higher risk of incident albuminuria.

Cite This Study

LUZURIAGA et al. (2026) conducted a cohort in Type 2 diabetes (n=447). Severe insulin-resistant diabetes (SIRD) vs. Mild obesity-related diabetes (MOD) was evaluated on Subsequent albuminuria (HR 2.12, 95% CI 1.21-3.71). Severe insulin-resistant diabetes (SIRD) was associated with a higher risk of subsequent albuminuria compared to mild obesity-related diabetes (MOD) (HR 2.12; 95% CI 1.21-3.71).

synapsesocial.com/papers/6a250b0e7def13d035e1b095 https://doi.org/10.2337/db26-2403-p

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2403-P: Diabetes Clusters, Risk of Complications, and Differences in Partitioned Polygenic Risk Scores (PPRS) in Indigenous Americans

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

2403-P: Diabetes Clusters, Risk of Complications, and Differences in Partitioned Polygenic Risk Scores (PPRS) in Indigenous Americans

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

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Also Consider