---
title: "WashU1 GWAS"
id: "8589"
type: "sample_set"
slug: "snd10129"
published_at: "2026-06-18T17:17:40+00:00"
modified_at: "2026-06-18T17:17:40+00:00"
url: "https://dss.niagads.org/sample-sets/snd10129/"
markdown_url: "https://dss.niagads.org/sample-sets/snd10129.md"
excerpt: "The WashU1 sample set was genotyped using the Illumina Human610-Quad BeadChip. The standard Alzheimer’s Disease Genetics Consortium (ADGC) quality control pipeline (Naj et al. 2011) was applied to this GWAS dataset. The final QC’d dataset is on GRCh38."
---

## Description

The WashU1 sample set was genotyped using the Illumina Human610-Quad BeadChip. The standard Alzheimer’s Disease Genetics Consortium (ADGC) quality control pipeline (Naj et al. 2011) was applied to this GWAS dataset. The final QC’d dataset is on GRCh38.

## Cohorts

- [Knight Alzheimer’s Disease Research Center (KGAD)](https://dss.niagads.org/cohorts/knight-alzheimers-disease-research-center-kgad/)

## Sex

### Total number of samples: 575

Female25945.0 %

Male18532.2 %

Sex not reported: 131

## Race

### Total number of samples: 575

| White | 444 |
| --- | --- |
| NA | 131 |

## Ethnicity

### Total number of samples: 575

Not Hispanic or Latino

444

77.2%

Not Applicable/Not Available

131

22.8%

## Diagnosis

### Total number of samples: 575

| AD |  |  |
| --- | --- | --- |
| Control | 175 | 30.4% |
| Case | 269 | 46.8% |
| Unknown | 131 | 22.8% |

## APOE

### Total number of samples: 575

- 221 (0.2%)
- 2336 (6.3%)
- 2413 (2.3%)
- 33210 (36.5%)
- 34154 (26.8%)
- 4429 (5.0%)
- NA132 (23.0%)