Ann Lab Med.  2023 Nov;43(6):638-641. 10.3343/alm.2023.43.6.638.

Variant Allele Frequency of Pseudogene-Related Variants in Short-read Next-Generation Sequencing Data May Mislead Genetic Diagnosis: A Case of Shwachman-Diamond Syndrome

Affiliations
  • 1Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
  • 2Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
  • 3Rare Disease Center, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
  • 4Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea


Figure

  • Fig. 1 Molecular findings in the present case. (A) Read alignments of NGS of the patient shown by the IGV software. (B) Sanger sequencing results of the patient and her parents. (C) Schema of SBDS and SBDSP1 conversion at long arm of chromosome 7. The sequence in black circles are derived from SBDS and those in white circles are from SBDSP1. Only 5 bases that are distinctive are described. The SBDS-specific primer set sequence and their approximate binding locus are indicated. Abbreviations: NGS, next-generation sequencing; IGV, Integrative Genomics Viewer.


Reference

1. Nelson A, Myers K. Adam MP, Mirzaa GM, editors. 2008. Shwachman-Diamond Syndrome. GeneReviews®. University of Washington, Seattle;Seattle:
2. Furutani E, Liu S, Galvin A, Steltz S, Malsch MM, Loveless SK, et al. 2022; Hematologic complications with age in Shwachman-Diamond syndrome. Blood Adv. 6:297–306. DOI: 10.1182/bloodadvances.2021005539. PMID: 34758064. PMCID: PMC8753194.
Article
3. Orphanet. The portal for rare diseases and orphan drugs. https://www.orpha.net/. Updated on June 2014.
4. Warren AJ. 2018; Molecular basis of the human ribosomopathy Shwachman-Diamond syndrome. Adv Biol Regul. 67:109–27. DOI: 10.1016/j.jbior.2017.09.002. PMID: 28942353. PMCID: PMC6710477.
Article
5. Lawal OS, Mathur N, Eapi S, Chowdhury R, Malik BH. 2020; Liver and cardiac involvement in Shwachman-Diamond syndrome: a literature review. Cureus. 12:e6676. DOI: 10.7759/cureus.6676.
Article
6. Yamada M, Uehara T, Suzuki H, Takenouchi T, Inui A, Ikemiyagi M, et al. 2020; Shortfall of exome analysis for diagnosis of Shwachman-Diamond syndrome: mismapping due to the pseudogene SBDSP1. Am J Med Genet A. 182:1631–6. DOI: 10.1002/ajmg.a.61598. PMID: 32412173.
7. Wu D, Zhang L, Qiang Y, Wang K. 2022; Improved detection of SBDS gene mutation by a new method of next-generation sequencing analysis based on the Chinese mutation spectrum. PLoS One. 17:e0269029. DOI: 10.1371/journal.pone.0269029. PMID: 36512530. PMCID: PMC9747038.
Article
8. Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, et al. 2015; 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. Genet Med. 17:405–24. DOI: 10.1038/gim.2015.30. PMID: 25741868. PMCID: PMC4544753.
Article
9. Peng X, Dong X, Wang Y, Wu B, Wang H, Lu W, et al. 2022; Overcoming the pitfalls of next-generation sequencing-based molecular diagnosis of Shwachman-Diamond syndrome. J Mol Diagn. 24:1240–53. DOI: 10.1016/j.jmoldx.2022.09.002. PMID: 36162759.
Article
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