Pearson Syndrome

Forms and Documents

Test Details

  • Molecular confirmation of a clinical diagnosis
  • Testing of patients suspected of having a mitochondrial disorder

65 confirmed disease-causing mtDNA point variants (see list in Test Info Sheet) and large scale deletion analysis of the mitochondrial genome (including LHON [20 mutations], MELAS [16 mutations], LS/NARP [22 mutations], MIHL/MIDM [10 mutations)] MERRF [6 mutations], KSS, CPEO, Pearson syndrome, etc.)

  • Next-Gen Sequencing

Ordering

704
3-4 weeks
Tissue Biopsy (>50 mg Muscle or Liver-Flash Frozen)
2-5 mL Blood - Lavender Top Tube | Oral Rinse (30-40 mL) | Buccal Swabs

Billing

81401x2, 81465x1, 81479x1
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

  1. Longo, N. (2003) Neurol Clin N Am 21:817-831.
  2. Majamaa et al., (1998) Am J Hum Genet 63:447-454.
  3. Goto et al., (1991) Biochim Biophys Acta 1097:238-40.
  4. Mackey et al., (1996) Am J Hum Genet 59:481-485.
  5. Taylor et al., (2003) J Am Coll Cardiol 41:1786-96.
  6. DiMauro, S. Gene Reviews (2005) MERRF.
  7. Thorburn, D. Gene Reviews (2006) Mitochondrial DNA-Associated Leigh Syndrome and NARP.
  8. DiMauro, S. Gene Reviews (2005) MELAS.
  9. Yu-Wai-Man, P and Chinnery, P. Gene Reviews (2008) Leber Hereditary Optic Neuropathy.
  10. Macmillan et al., (1998) Neurology 50:417-22.
  11. Crispim et al., (2008) Arq Bras Endocrinol Metab 52:1228-1235.
  12. Zhu et al., (2009) Acta Biochim Biophys Sin 41:179-187.
  13. Chinnery, P. Gene Reviews (2006) Mitochondrial Disorders Overview.
  14. Bennett S.(2004) Pharmacogenomics 5:433-8
  15. MITOMAP: A Human Mitochondrial Genome Database. http://www.mitomap.org, 2008.
  16. Achilli et al., (2012) PLoS One 7:e42242.
  17. Pulkes et al., (1999) Ann Neurol 46:916-9.
  18. DiMaruo, S. and Hirano, M. (Updated [May 3, 2011]). Mitochondrial DNA Deletion Syndromes In: GeneReviews at Genetests: Medical Genetics Information Resource (database online). Copyright, University of Washington, Seattle. 1997-2012. Available at http://w
  19. Jeppesen TD,et al. (2003) Ann Neurol 54(1):86-92.
  20. Moraes et al., (1989) N Engl J Med 18:1293-9.
  21. Chinault et al., Genet Med (2009)11:518-526
  22. Uusimaa et al., (2000) Pediatrics 105:598-603
  23. Remes et al., (2005) Neurology 64:976-981
  24. Darin et al., (2001) Ann Neurol 49:377-383
  25. Wong, L. and Senadheera, D. (1997) Clin Chem 43:1857-1861
  26. Jaksch et al., (2001) J Med Genet 38:665-673

Forms and Documents

Test Details

  • Molecular confirmation of a clinical diagnosis
  • Testing of patients suspected of having a mitochondrial disorder
  • Next-Gen Sequencing

Ordering

554
4 weeks
Tissue Biopsy (>50 mg Muscle or Liver-Flash Frozen)
2-5 mL Blood - Lavender Top Tube | Oral Rinse (30-40 mL) | Buccal Swabs

Billing

81460x1, 81465x1
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

  1. Oliveira et al., (2005) Dev Med Child Neurol 47:185-189.
  2. Zhu et al., (2009) Acta Biochim Biophys Sin 41:179-187
  3. Chinnery, P. Gene Reviews (2006) Mitochondrial Disorders Overview.
  4. Tarnopolsky, M and Raha S. (2005) Med Sci Sports Exerc 37:2086-93.
  5. van Adel, B. and Tarnopolsky, M. (2009) J Clin Neuromusc Dis 10:97-121.
  6. Longo, N. (2003) Neurol Clin N Am 21:817- 831.
  7. Bennett S.(2004) Pharmacogenomics 5:433-8.
  8. Chinnery, P. Gene Reviews (2006) Mitochondrial Disorders Overview.
  9. Koenig MK. (2008) Pediatr Neurol, 38:305-313.
  10. Zeviani1 and Di Donato. (2004) Brain, 127: 2153–2172.

Forms and Documents

Test Details

AARS2, ABCB7, ACAD9, ACO2, AFG3L2, AGK, AIFM1, ALAS2, APOPT1, ATP5A1, ATP5E, ATP7B, ATPAF2, AUH, BCS1L, BOLA3, C12ORF65, C19orf12, CARS2, CLPB, COA5, COA6, COASY, COQ2, COQ4, COQ6, COQ7, COQ8A, COQ8B, COQ9, COX10, COX14, COX15, COX20, COX6A1, COX6B1, COX8A, CYC1, DARS2, DGUOK, DLAT, DLD, DNA2, DNAJC19, DNM1L, EARS2, ECHS1, ELAC2, ETFA, ETFB, ETFDH, ETHE1, FARS2, FASTKD2, FBXL4, FDX1L, FH, FLAD1, FOXRED1, GARS, GCDH, GFER, GFM1, GFM2, GLRX5, GTPBP3, GYG2, HARS2, HMGCL, HTRA2, IARS2, IBA57, ISCA2, ISCU, LAMP2, LARS, LARS2, LIAS, LIPT1, LRPPRC, LYRM4, LYRM7, MARS2, MFF, MFN2, MGME1, MICU1, MPC1, MPV17, MRPL12, MRPL3, MRPL44, MRPS16, MRPS22, MRPS7, MTFMT, MTO1, MTPAP, NARS2, NDUFA1, NDUFA10, NDUFA11, NDUFA12, NDUFA2, NDUFA4, NDUFA9, NDUFAF1, NDUFAF2, NDUFAF3, NDUFAF4, NDUFAF5, NDUFAF6, NDUFAF7, NDUFB11, NDUFB3, NDUFB9, NDUFS1, NDUFS2, NDUFS3, NDUFS4, NDUFS6, NDUFS7, NDUFS8, NDUFV1, NDUFV2, NFS1, NFU1, NR2F1, NUBPL, OPA1, OPA3, OTC, PARS2, PC, PCCA, PCCB, PDHA1, PDHB, PDHX, PDP1, PDSS1, PDSS2, PET100, PNPT1, POLG, POLG2, PRKAG2, PUS1, QARS, RARS, RARS2, RMND1, RNASEH1, RRM2B, SARS2, SCO1, SCO2, SDHA, SDHAF1, SERAC1, SFXN4, SLC19A2, SLC19A3, SLC22A5, SLC25A26, SLC25A3, SLC25A38, SLC25A4, SLC25A46, SPAST, SPG7, SUCLA2, SUCLG1, SURF1, TACO1, TARS2, TAZ, TFAM, TIMM8A, TK2, TMEM126A, TMEM126B, TMEM70, TPK1, TRIT1, TRMT10C, TRMU, TRNT1, TSFM, TTC19, TUFM, TWNK, TYMP, UQCC2, UQCC3, UQCRB, UQCRC2, UQCRQ, VARS2, WDR45, WFS1, YARS2
  • Molecular confirmation of a clinical diagnosis
  • Testing of patients suspected of having a mitochondrial disorder
  • Prenatal diagnosis for known familial mutation(s) in nuclear genes in at-risk pregnancies.
  • Next-Gen Sequencing
  • Deletion/Duplication Analysis

Ordering

615
6 weeks
2-5 mL Blood - Lavender Top Tube
Oral Rinse (30-40 mL) | Buccal Swabs

Billing

81460x1, 81465x1, 81440x1
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

  1. Oliveira et al. (2005) Dev Med Child Neurol 47 (3):185-9 (PMID: 15739723)
  2. Chinnery P. Mitochondrial Disorders Overview 2000 Jun 8 [Updated 2014 Aug 14]. In: Pagon RA, Adam MP, Ardinger HH, et al., editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2018. Available from: https://www.ncbi.nlm.n
  3. Tarnopolsky et al. (2005) Med Sci Sports Exerc 37 (12):2086-93 (PMID: 16331134)
  4. van Adel et al. (2009) Journal Of Clinical Neuromuscular Disease 10 (3):97-121 (PMID: 19258857)
  5. Zhu et al. (2009) Acta Biochim. Biophys. Sin. (Shanghai) 41 (3):179-87 (PMID: 19280056)
  6. Longo et al. (2003) Neurol Clin 21 (4):817-31 (PMID: 14743651)
  7. Koenig et al. (2008) Pediatr. Neurol. 38 (5):305-13 (PMID: 18410845)
  8. Zeviani et al. (2004) Brain 127 (Pt 10):2153-72 (PMID: 15358637)
  9. Taylor et al. (2014) JAMA 312 (1):68-77 (PMID: 25058219)

Forms and Documents

Test Details

ABCB7, ALAS2, GLRX5, PUS1, SLC19A2, SLC25A38, TRNT1, YARS2
  • Mitochondrial genome large deletion testing
  • Confirmation of a clinical diagnosis
  • To assist in determining the most appropriate therapy, as the response to specific therapeutic modalities depends on the diagnosis
  • Targeted testing for a known familial variant
  • Prenatal diagnosis for known familial variants in nuclear genes in at-risk pregnancies
  • Genetic counseling
  • Deletion/Duplication Analysis
  • Next-Gen Sequencing

Ordering

938
4 weeks
2-5 mL Blood - Lavender Top Tube

Billing

81465x1, 81479x1
Yes
Yes
* For price inquiries please email zebras@genedx.com

References

  1. OMIM, Online Mendelian Inheritance in Man, (TM). McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University (Baltimore, MD) and National Center for Biotechnology Information, National Library of Medicine (Bethesda, MD), http://www.ncbi.nlm.n
  2. Bergmann AK et al. Systematic molecular genetic analysis of congenital sideroblastic anemia: evidence for genetic heterogeneity and identification of novel mutations. Pediatric Blood & Cancer. 2010 Feb 54(2):273-8. (PMID:19731322)
  3. Ohba R et al. Clinical and genetic characteristics of congenital sideroblastic anemia: comparison with myelodysplastic syndrome with ring sideroblast (MDS-RS). Annals Of Hematology. 2013 Jan 92(1):1-9. (PMID:22983749)
  4. Bekri S, D’Hooghe M, Vermeersch P. X-Linked Sideroblastic Anemia and Ataxia. 2006 Mar 1 [Updated 2014 Apr 3]. In: Pagon RA, Adam MP, Ardinger HH, et al., editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2015. Availab
  5. Aivado M et al. X-linked sideroblastic anemia associated with a novel ALAS2 mutation and unfortunate skewed X-chromosome inactivation patterns. Blood Cells, Molecules & Diseases. 37(1):40-5. (PMID: 16735131)
  6. Guernsey DL et al. Mutations in mitochondrial carrier family gene SLC25A38 cause nonsyndromic autosomal recessive congenital sideroblastic anemia. Nature Genetics. 2009 Jun 41(6):651-3. (PMID: 19412178)
  7. Rouault TA and Tong WH. Iron-sulfur cluster biogenesis and human disease. Trends In Genetics : Tig. 2008 Aug 24(8):398-407. (PMID:18606475)
  8. Ye H et al. Glutaredoxin 5 deficiency causes sideroblastic anemia by specifically impairing heme biosynthesis and depleting cytosolic iron in human erythroblasts. The Journal Of Clinical Investigation. 2010 May 120(5):1749-61. (PMID:20364084)
  9. Bykhovskaya Y et al. Missense mutation in pseudouridine synthase 1 (PUS1) causes mitochondrial myopathy and sideroblastic anemia (MLASA). American Journal Of Human Genetics. 2004 Jun 74(6):1303-8. (PMID: 15108122)
  10. Bergmann AK et al. Thiamine-responsive megaloblastic anemia: identification of novel compound heterozygotes and mutation update. The Journal Of Pediatrics. 2009 Dec 155(6):888-892. (PMID: 19643445)
  11. Chakraborty PK et al. Mutations in TRNT1 cause congenital sideroblastic anemia with immunodeficiency, fevers, and developmental delay (SIFD). Blood. 2014 Oct 30 124(18):2867-71. (PMID: 25193871)
  12. Wiseman DH et al. A novel syndrome of congenital sideroblastic anemia, B-cell immunodeficiency, periodic fevers, and developmental delay (SIFD). Blood. 2013 Jul 4 122(1):112-23. (PMID: 23553769)
  13. Riley LG et al. Mutation of the mitochondrial tyrosyl-tRNA synthetase gene, YARS2, causes myopathy, lactic acidosis, and sideroblastic anemia--MLASA syndrome. American Journal Of Human Genetics. 2010 87(1):52-9. (PMID: 20598274)
  14. Riley LG et al. Phenotypic variability and identification of novel YARS2 mutations in YARS2 mitochondrial myopathy, lactic acidosis and sideroblastic anaemia. Orphanet Journal Of Rare Diseases. 2013 8:193. (PMID: 24344687)
  15. DiMauro S, Hirano M. Mitochondrial DNA Deletion Syndromes. 2003 Dec 17 [Updated 2011 May 3]. In: Pagon RA, Adam MP, Ardinger HH, et al., editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2015. Available from: http://w
  16. Bekri S et al. Human ABC7 transporter: gene structure and mutation causing X-linked sideroblastic anemia with ataxia with disruption of cytosolic iron-sulfur protein maturation. Blood. 2000 96(9):3256-64. (PMID: 11050011)
  17. D\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'Hooghe M et al. X-linked sideroblastic anemia and ataxia: a new family with identification of a fourth ABCB7 gene mutation. Eu
  18. Maguire A et al. X-linked cerebellar ataxia and sideroblastic anaemia associated with a missense mutation in the ABC7 gene predicting V411L. British Journal Of Haematology. 2001 Dec 115(4):910-7. (PMID: 11843825)
  19. Bishop DF et al. X-linked sideroblastic anemia due to carboxyl-terminal ALAS2 mutations that cause loss of binding to the ?-subunit of succinyl-CoA synthetase (SUCLA2). The Journal Of Biological Chemistry. 2012 287(34):28943-55. (PMID:22740690)
  20. Campagna DR et al. X-linked sideroblastic anemia due to ALAS2 intron 1 enhancer element GATA-binding site mutations. American Journal Of Hematology. 2014 Mar 89(3):315-9. (PMID:24166784)
  21. Kaneko K et al. Identification of a novel erythroid-specific enhancer for the ALAS2 gene and its loss-of-function mutation which is associated with congenital sideroblastic anemia. Haematologica. 2014 Feb 99(2):252-61. (PMID:23935018)
  22. . Stenson et al. (2014) The Human Gene Mutation Database (HGMD®) Human genetics 133(1):1-9 (PMID: 24077912)
  23. Kannengiesser C et al. Missense SLC25A38 variations play an important role in autosomal recessive inherited sideroblastic anemia. Haematologica. 2011 Jun 96(6):808-13. (PMID:21393332)
  24. . Fernandez-Vizarra E et al. Nonsense mutation in pseudouridylate synthase 1 (PUS1) in two brothers affected by myopathy, lactic acidosis and sideroblastic anaemia (MLASA). Journal Of Medical Genetics. 2007 Mar 44(3):173-80. (PMID: 17056637)
  25. Oishi K, Diaz GA. Thiamine-Responsive Megaloblastic Anemia Syndrome. 2003 Oct 24 [Updated 2014 Nov 20]. In: Pagon RA, Adam MP, Ardinger HH, et al., editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2015. Available fro
  26. Labay V et al. Mutations in SLC19A2 cause thiamine-responsive megaloblastic anaemia associated with diabetes mellitus and deafness. Nature Genetics. 1999 Jul 22(3):300-4. (PMID: 10391221)
  27. Scharfe C et al. A novel mutation in the thiamine responsive megaloblastic anaemia gene SLC19A2 in a patient with deficiency of respiratory chain complex I. Journal Of Medical Genetics. 2000 Sep 37(9):669-73. (PMID: 10978358)
  28. Shahni R et al. A distinct mitochondrial myopathy, lactic acidosis and sideroblastic anemia (MLASA) phenotype associates with YARS2 mutations. American Journal Of Medical Genetics. Part A. 2013 161(9):2334-8. (PMID:23918765)

Forms and Documents

Test Details

  • Molecular confirmation of a clinical diagnosis
  • Testing of patients suspected of having a mitochondrial disorder
  • Next-Gen Sequencing

Ordering

TB60
4 weeks
Tissue Biopsy (>50 mg Muscle or Liver-Flash Frozen)
2-5 mL Blood - Lavender Top Tube | Buccal Swabs

Billing

81465x1
No
Yes
* For price inquiries please email zebras@genedx.com