tigger - tigger


Here we provide a Tool for Immunoglobulin Genotype Elucidation via Rep-Seq (TIgGER). TIgGER inferrs the set of Ig alleles carried by an individual (including any novel alleles) and then uses this set of alleles to correct the initial assignments given to sample sequences by existing tools.


Immunoglobulin repertoire sequencing (AIRR-Seq, Rep-Seq) data is currently the subject of much study. A key step in analyzing these data involves assigning the closest known V(D)J germline alleles to the (often somatically mutated) sample sequences using a tool such as IMGT/HighV-QUEST. However, if the sample utilizes alleles not in the germline database used for alignment, this step will fail. Additionally, this alignment has an associated error rate of ~5 mutations. The purpose of TIgGER is to address these issues.

Allele detection and genotyping

Mutation handling

Input, output and formatting


  1. Gadala-Maria, et al. (2015) Automated analysis of high-throughput B cell sequencing data reveals a high frequency of novel immunoglobulin V gene segment alleles. PNAS. 112(8):E862-70.