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MHConstructor: A high-throughput, haplotype-informed solution to the MHC assembly challenge.

Kristen J Wade1, Rayo Suseno1, Kerry Kizer1

  • 1Weill Institute for Neurosciences, Department of Neurology, University of California San Francisco, San Francisco, CA, United States.

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PubMed
Summary
This summary is machine-generated.

High genetic variation in the human major histocompatibility complex (MHC) challenges DNA sequencing. MHConstructor offers a novel, containerized pipeline for accurate, alignment-free MHC de novo assembly from short reads.

Keywords:
Major histocompatibility complexde novo assemblyhaplotypehuman leukocyte antigen genesshort read sequencing

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Area of Science:

  • Genomics
  • Bioinformatics
  • Human Genetics

Background:

  • The human major histocompatibility complex (MHC) exhibits extreme genetic polymorphism.
  • Reference-based alignment methods are inadequate for MHC sequence assembly due to high variability.
  • Accurate MHC sequencing is crucial for understanding immune responses and disease associations.

Purpose of the Study:

  • To develop a novel computational pipeline for *de novo* assembly of the human MHC region using short-read sequencing data.
  • To provide a reproducible and high-throughput solution for MHC sequence analysis in large cohorts.
  • To overcome the limitations of existing reference-based methods for MHC assembly.

Main Methods:

  • Incorporation of a short-read *de novo* assembly algorithm into a specialized workflow.
  • Development of MHConstructor, a containerized bioinformatics pipeline.
  • Application to both whole genome sequencing and target-capture short-read data.
  • Validation in large population cohorts.

Main Results:

  • MHConstructor enables high-throughput, haplotype-informed, and reproducible *de novo* assembly of the MHC.
  • The pipeline effectively handles the high genetic polymorphism characteristic of the MHC region.
  • It provides an alignment-free approach, circumventing reference-based limitations.
  • No comparable self-contained tool currently exists for *de novo* MHC assembly from short reads.

Conclusions:

  • MHConstructor represents a significant advancement for MHC sequence analysis.
  • It democratizes access to high-quality, alignment-free MHC data.
  • Facilitates deeper insights into immune system genetics and disease mechanisms.