PLINK allele mismatch report file
File type: Various data file
The .allele.no.snp file is an auxiliary report generated by PLINK during genotype-data checks. It records allele mismatches identified by the software.
File type category:
Various data file
Date updated: October 2, 2026
PLINK is command-line software for genome-wide association analysis and other genetic data-processing tasks on Windows, Linux, OS X and MS-DOS. The .allele.no.snp file stores an allele mismatch report produced when PLINK finds allele discrepancies while checking or comparing genotype datasets.
The report belongs to the PLINK analysis workflow rather than representing a complete genotype dataset. It is used to identify problems that may need correction in the source data before an analysis or dataset merge can continue.
The file is a PLINK report rather than an independent data-exchange format.
Use PLINK to open .allele.no.snp files. The report can also be inspected with a plain-text editor or processed from the command line alongside the PLINK input and output files that produced it.
PLINK generates this report; it is not normally opened as a project or dataset in a graphical application.
This is a diagnostic report, so it has no meaningful conversion to another genotype-data format. If a different report or corrected dataset is required, modify the source data and rerun the relevant PLINK operation.
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