PGLNext

PGLNext is a next generation sequencing panel that simultaneously analyzes 12 genes associated with an increased risk of developing paragangliomas (PGLs) and/or pheochromocytomas (PCCs).

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Test Code 5504
Turnaround Time (TAT) 14-21 days
Number of Genes 12
Specimen Requirements Click here

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When To Consider Testing

  • PGL/PCC at any age
  • Presence of PGL/PCC with a personal or family history* of kidney, thyroid, or breast cancer
  • Presence of PGL/PCC with a personal or family history* of neurofibromas, kidney, or gastrointestinal stromal tumors (GIST)

   * On the same side of the family

Mutation Detection Rate

PGLNext can detect >99.9% of described mutations in the included genes, when present (analytic sensitivity).

Test Description

PGLNext analyzes 12 genes (listed above). All genes are evaluated by next generation sequencing (NGS) or Sanger sequencing of all coding domains, and well into the flanking 5’ and 3’ ends of all the introns and untranslated regions. Clinically significant intronic findings beyond 5 base pairs are always reported. Intronic variants of unknown or unlikely clinical significance are not reported beyond 5 base pairs from the splice junction. Additional Sanger sequencing is performed for any regions missing or with insufficient read depth coverage for reliable heterozygous variant detection. Reportable small insertions and deletions, potentially homozygous variants, variants in regions complicated by pseudogene interference, and single nucleotide variant calls not satisfying 100x depth of coverage and 40% het ratio thresholds are verified by Sanger sequencing. Gross deletion/duplication analysis is performed for the covered exons and untranslated regions of all 12 genes using read-depth from NGS data with confirmatory multiplex ligation-dependent probe amplification (MLPA) and/or targeted chromosomal microarray.

 

1. Mu W, et al. Sanger confirmation is required to achieve optimal sensitivity and specificity in next-generation sequencing panel testing. J Mol Diagn. 2016. 18(6):923-932.

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