PMC Inborn Errors of Immunity and Cytopenias Panel

Up to 574 genes Turn around Time: 10 business days
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Test Description

PMC Inborn Errors of Immunity and Cytopenias Panel examines genes linked to inherited immune system disorders, primary immunodeficiencies, autoimmune disorders and cytopenias like bone marrow failure and hereditary lymphoma. Additionally, this test includes genes related to adult-onset hereditary cancer.

  • Associated Conditions
    • severe combined immunodeficiency
    • combined immunodeficiency
    • combined immunodeficiency with syndromic features
    • major histocompatibility complex class I and II deficiencies
    • dyskeratosis congenita
    • agammaglobulinemia and hypogammaglobulinemia
    • hyper IgM syndrome
  • Methodology

    Targeted Exome/ Slice Exome (Next Generation Sequencing including Copy Number Variation)

  • Limitations

    All sequencing technologies have limitations. A negative result from this analysis does not rule out a possible genetic diagnosis as some variants may not be detected by this test. This test is not designed to detect low level mosaicism, structural rearrangements, indels >40bp, deep intronic variants of unknown clinical significance, or large cytogenetic CNVs. Certain inherent qualities of the human genome, for example repetitive regions/homopolymers, GC rich, pseudogenes, and rare polymorphisms, pose significant technical challenges such as sequence misalignment that may potentially impact the accuracy of the results. False negative results may also occur in the setting of allogeneic bone marrow, stem cell transplantation, active or chronic hematologic conditions, recent blood transfusions, suboptimal DNA quality or PCR trace contamination. Other potential sources of error include sample mix-ups and clerical issues.

  • References
    • 1. Richards S et al. Genetics in medicine. Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology. 2015 May;17(5):405-24 (PMID: 25741868)
    • 2. GnomAD (gnomAD)
    • 3. CSPEC (ClinGen variant classification rules registry) Criteria Specification Registry
    • 4. Normal copy number variation in healthy individuals database of genomic variants: http://dgv.tcag.ca/dgv/app/home
  • Tagged Genes

    Primary panel:

    574 genes selected