The samples that PASS the pre-aggregation QC pipeline (per sample QC) are aggregated into one multi-sample VCF file. Samples are aggregated using Dragen Iterative gVCF genotyper. To accelerate the aggregation and the downstream analyses (parallel processing), the genome is divided into 100 shards.
Each WGS sample is tested independently through this pipeline. If a sample fails the test, it is excluded from the aggregation process and will not be included in the final release. These tests are designed to identify sample swaps, cross-individual contamination, and errors in sample preparation or sequencing. A detailed list of specific QC processes is provided in the table below:
Genomic raw data is processed using the Dragen solution.
All callers from the Dragen DNA pipeline are activated.
This pipeline takes two types of input files:
Genomic Workshop
Details
01 December, 2024
02 December, 2024
Mandarin Oriental Doha
Doha Health Week