Table of Contents
Exercise 10
Data description
Working plan
We have several candidate profiles of mutations to explore:
How many variants do you detect for each scenario?
A. Individual filters
- Description of variants. How many SNVs, INDELs, MNVs, SVs, CNVs?
- Recessive heritage
- Dominant heritage (father is affected).
- For this chromosome: 5
- Evaluate these regions at the same time: 5,6:10000-500000
- For theses genes: SDHA,AHRR
- Are there variants for these SNPs: rs6682385,rs75478250,rs147502335?
- Variants with MAF (Minimum Allelic Frequency) < 0.001 for African population in 1000 Genomes phase 1
- Variants with MAF (Minimum Allelic Frequency) < 0.001 for African population in 1000 Genomes phase 3
- Variants with MAF (Minimum Allelic Frequency) < 0.001 for African American population in ESP 6500
B. Progressive selection
- There are clear information about our candidate variants:
- Recessive heritage
- Chromosome 1
- SNV
- Variants with MAF (Minimum Allelic Frequency) < 0.001 for all populations in 1000 Genomes phase 1
- How many variants do you have including both characteristics?
- Download these final results in a csv file
Solutions
A. Individual filters
- 36424 SNVs, 3552 INDELs, 19 MNVs, 3 SVs, 0 CNVs
- Candidate variants: 980
- Candidate variants: 1107
- Candidate variants: 1826
- Candidate variants: 1832
- Candidate variants: 16
- Candidate variants: 2
- Candidate variants in 1000 Genomes, phase 1: 11925
- Candidate variants in 1000 Genomes, phase 3: 12894
- Candidate variants in African American MAF population: 21319
B. Progressive selection
- 980 → 106 → 94 → 14