If it’s a list of 406,000 IDs, you likely need to filter it against a master phenotype file using df.merge() . 🔬 Contextual Use Cases
Because "406K" often refers to a large sample size (e.g., 406,000 individuals or variants), this file may be too large for standard text editors. 406K.txt
A list of genetic variants (SNPs) passing a certain threshold. If it’s a list of 406,000 IDs, you
Based on the file name pattern, this is likely one of the following: If it’s a list of 406
If the file crashes your computer, use the chunksize parameter in Pandas to process it in smaller pieces.
A list of samples that passed genotype calling. Troubleshooting