Neuropediatrics 2016; 47(04): 205-220
DOI: 10.1055/s-0036-1582140
Review Article
Georg Thieme Verlag KG Stuttgart · New York

Clinical and Biochemical Pitfalls in the Diagnosis of Peroxisomal Disorders

Femke C. C. Klouwer*
1   Department of Pediatric Neurology, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
2   Laboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
,
Irene C. Huffnagel*
1   Department of Pediatric Neurology, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
,
Sacha Ferdinandusse
2   Laboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
,
Hans R. Waterham
2   Laboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
,
Ronald J. A. Wanders
2   Laboratory Genetic Metabolic Diseases, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
,
Marc Engelen
1   Department of Pediatric Neurology, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
,
Bwee Tien Poll-The
1   Department of Pediatric Neurology, Emma Children's Hospital, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
› Author Affiliations
Further Information

Publication History

30 October 2015

16 February 2016

Publication Date:
18 April 2016 (online)

Abstract

Peroxisomal disorders are a heterogeneous group of genetic metabolic disorders, caused by a defect in peroxisome biogenesis or a deficiency of a single peroxisomal enzyme. The peroxisomal disorders include the Zellweger spectrum disorders, the rhizomelic chondrodysplasia punctata spectrum disorders, X-linked adrenoleukodystrophy, and multiple single enzyme deficiencies. There are several core phenotypes caused by peroxisomal dysfunction that clinicians can recognize. The diagnosis is suggested by biochemical testing in blood and urine and confirmed by functional assays in cultured skin fibroblasts, followed by mutation analysis. This review describes the phenotype of the main peroxisomal disorders and possible pitfalls in (laboratory) diagnosis to aid clinicians in the recognition of this group of diseases.

* Femke C. C. Klouwer and Irene C. Huffnagel have contributed equally to the article.


 
  • References

  • 1 Wanders RJA, Waterham HR. Biochemistry of mammalian peroxisomes revisited. Annu Rev Biochem 2006; 75: 295-332
  • 2 Wanders RJA, Waterham HR. Peroxisomal disorders I: biochemistry and genetics of peroxisome biogenesis disorders. Clin Genet 2005; 67 (2) 107-133
  • 3 Nagan N, Zoeller RA. Plasmalogens: biosynthesis and functions. Prog Lipid Res 2001; 40 (3) 199-229
  • 4 Ferdinandusse S, Denis S, Mooijer PA , et al. Identification of the peroxisomal beta-oxidation enzymes involved in the biosynthesis of docosahexaenoic acid. J Lipid Res 2001; 42 (12) 1987-1995
  • 5 Wanders RJA. Metabolic functions of peroxisomes in health and disease. Biochimie 2014; 98: 36-44
  • 6 Gould S, Raymond G, Valle D. The peroxisome biogenesis disorders. In: Valle D, Beaudet AL, Vogelstein B, eds. The Metabolic and Molecular Bases of Inherited Disease. 8th ed. McGraw-Hill; 2001: 3181-3218
  • 7 Waterham HR, Ebberink MS. Genetics and molecular basis of human peroxisome biogenesis disorders. Biochim Biophys Acta 2012; 1822 (9) 1430-1441
  • 8 Bezman L, Moser AB, Raymond GV , et al. Adrenoleukodystrophy: incidence, new mutation rate, and results of extended family screening. Ann Neurol 2001; 49 (4) 512-517
  • 9 Mosser J, Douar AM, Sarde CO , et al. Putative X-linked adrenoleukodystrophy gene shares unexpected homology with ABC transporters. Nature 1993; 361 (6414) 726-730
  • 10 Singh I, Moser AE, Moser HW, Kishimoto Y. Adrenoleukodystrophy: impaired oxidation of very long chain fatty acids in white blood cells, cultured skin fibroblasts, and amniocytes. Pediatr Res 1984; 18 (3) 286-290
  • 11 Moser HW, Moser AB, Frayer KK , et al. Adrenoleukodystrophy: increased plasma content of saturated very long chain fatty acids. Neurology 1981; 31 (10) 1241-1249
  • 12 Wierzbicki AS, Lloyd MD, Schofield CJ, Feher MD, Gibberd FB. Refsum's disease: a peroxisomal disorder affecting phytanic acid alpha-oxidation. J Neurochem 2002; 80 (5) 727-735
  • 13 Poll-The BT, Roels F, Ogier H , et al. A new peroxisomal disorder with enlarged peroxisomes and a specific deficiency of acyl-CoA oxidase (pseudo-neonatal adrenoleukodystrophy). Am J Hum Genet 1988; 42 (3) 422-434
  • 14 Suzuki Y, Jiang LL, Souri M , et al. D-3-hydroxyacyl-CoA dehydratase/D-3-hydroxyacyl-CoA dehydrogenase bifunctional protein deficiency: a newly identified peroxisomal disorder. Am J Hum Genet 1997; 61 (5) 1153-1162
  • 15 Wanders RJ, Schumacher H, Heikoop J, Schutgens RB, Tager JM. Human dihydroxyacetonephosphate acyltransferase deficiency: a new peroxisomal disorder. J Inherit Metab Dis 1992; 15 (3) 389-391
  • 16 Wanders RJ, Dekker C, Hovarth VA , et al. Human alkyldihydroxyacetonephosphate synthase deficiency: a new peroxisomal disorder. J Inherit Metab Dis 1994; 17 (3) 315-318
  • 17 Buchert R, Tawamie H, Smith C , et al. A peroxisomal disorder of severe intellectual disability, epilepsy, and cataracts due to fatty acyl-CoA reductase 1 deficiency. Am J Hum Genet 2014; 95 (5) 602-610
  • 18 Carlton VEH, Harris BZ, Puffenberger EG , et al. Complex inheritance of familial hypercholanemia with associated mutations in TJP2 and BAAT. Nat Genet 2003; 34 (1) 91-96
  • 19 Nishiyama K, Funai T, Katafuchi R, Hattori F, Onoyama K, Ichiyama A. Primary hyperoxaluria type I due to a point mutation of T to C in the coding region of the serine:pyruvate aminotransferase gene. Biochem Biophys Res Commun 1991; 176 (3) 1093-1099
  • 20 Ferdinandusse S, Kostopoulos P, Denis S , et al. Mutations in the gene encoding peroxisomal sterol carrier protein X (SCPx) cause leukencephalopathy with dystonia and motor neuropathy. Am J Hum Genet 2006; 78 (6) 1046-1052
  • 21 Ferdinandusse S, Jimenez-Sanchez G, Koster J , et al. A novel bile acid biosynthesis defect due to a deficiency of peroxisomal ABCD3. Hum Mol Genet 2015; 24 (2) 361-370
  • 22 Poll-The BT, Saudubray JM, Ogier HA , et al. Infantile Refsum disease: an inherited peroxisomal disorder. Comparison with Zellweger syndrome and neonatal adrenoleukodystrophy. Eur J Pediatr 1987; 146 (5) 477-483
  • 23 Ferdinandusse S, Denis S, Hogenhout EM , et al. Clinical, biochemical, and mutational spectrum of peroxisomal acyl-coenzyme A oxidase deficiency. Hum Mutat 2007; 28 (9) 904-912
  • 24 Ferdinandusse S, Denis S, Mooyer PAW , et al. Clinical and biochemical spectrum of D-bifunctional protein deficiency. Ann Neurol 2006; 59 (1) 92-104
  • 25 Carrozzo R, Bellini C, Lucioli S , et al. Peroxisomal acyl-CoA-oxidase deficiency: two new cases. Am J Med Genet A 2008; 146A (13) 1676-1681
  • 26 Poll-The BT, Gärtner J. Clinical diagnosis, biochemical findings and MRI spectrum of peroxisomal disorders. Biochim Biophys Acta 2012; 1822 (9) 1421-1429
  • 27 Passarge E, McAdams AJ. Cerebro-hepato-renal syndrome. A newly recognized hereditary disorder of multiple congenital defects, including sudanophilic leukodystrophy, cirrhosis of the liver, and polycystic kidneys. J Pediatr 1967; 71 (5) 691-702
  • 28 Smith DW, Opitz JM, Inhorn SL. A syndrome of multiple developmental defects including polycystic kidneys and intrahepatic biliary dysgenesis in 2 siblings. J Pediatr 1965; 67 (4) 617-624
  • 29 Theil AC, Schutgens RBH, Wanders RJA, Heymans HSA. Clinical recognition of patients affected by a peroxisomal disorder: a retrospective study in 40 patients. Eur J Pediatr 1992; 151 (2) 117-120
  • 30 Lee PR, Raymond GV. Child neurology: Zellweger syndrome. Neurology 2013; 80 (20) e207-e210
  • 31 Grayer J. Recognition of Zellweger syndrome in infancy. Adv Neonatal Care 2005; 5 (1) 5-13
  • 32 Steinberg SJ, Raymond GV, Braverman NE , et al. Peroxisome Biogenesis Disorders, Zellweger Syndrome Spectrum. In: Pagon RA, Adam MP, Ardinger HH, et al, eds. GeneReviews [Internet]. Seattle, WA: University of Washington; 2012
  • 33 Poll-The BT, Auburg P, Wanders RJA. Peroxisomal disorders. In: Saudubray JM, Berghe G, Walter JH, eds. Inborn Metabolic Diseases. Berlin, Heidelberg: Springer-Verlag; 2012: 591-604
  • 34 Ratbi I, Falkenberg KD, Sommen M , et al. Heimler Syndrome Is Caused by Hypomorphic Mutations in the Peroxisome-Biogenesis Genes PEX1 and PEX6. Am J Hum Genet 2015; 97 (4) 535-545
  • 35 Berendse K, Engelen M, Linthorst GE, van Trotsenburg ASP, Poll-The BT. High prevalence of primary adrenal insufficiency in Zellweger spectrum disorders. Orphanet J Rare Dis 2014; 9: 133
  • 36 Berendse K, Engelen M, Ferdinandusse S , et al. Zellweger spectrum disorders: clinical manifestations in patients surviving into adulthood. J Inherit Metab Dis 2016; 39 (1) 93-106
  • 37 Régal L, Ebberink MS, Goemans N , et al. Mutations in PEX10 are a cause of autosomal recessive ataxia. Ann Neurol 2010; 68 (2) 259-263
  • 38 Ebberink MS, Csanyi B, Chong WK , et al. Identification of an unusual variant peroxisome biogenesis disorder caused by mutations in the PEX16 gene. J Med Genet 2010; 47 (9) 608-615
  • 39 Sevin C, Ferdinandusse S, Waterham HR, Wanders RJ, Aubourg P. Autosomal recessive cerebellar ataxia caused by mutations in the PEX2 gene. Orphanet J Rare Dis 2011; 6: 8
  • 40 Ferdinandusse S, Ylianttila MS, Gloerich J , et al. Mutational spectrum of D-bifunctional protein deficiency and structure-based genotype-phenotype analysis. Am J Hum Genet 2006; 78 (1) 112-124
  • 41 McMillan HJ, Worthylake T, Schwartzentruber J , et al; FORGE Canada Consortium. Specific combination of compound heterozygous mutations in 17β-hydroxysteroid dehydrogenase type 4 (HSD17B4) defines a new subtype of D-bifunctional protein deficiency. Orphanet J Rare Dis 2012; 7: 90
  • 42 Ferdinandusse S, Barker S, Lachlan K , et al. Adult peroxisomal acyl-coenzyme A oxidase deficiency with cerebellar and brainstem atrophy. J Neurol Neurosurg Psychiatry 2010; 81 (3) 310-312
  • 43 Wanders RJA, Waterham HR. Peroxisomal disorders: the single peroxisomal enzyme deficiencies. Biochim Biophys Acta 2006; 1763 (12) 1707-1720
  • 44 Barøy T, Koster J, Strømme P , et al. A novel type of rhizomelic chondrodysplasia punctata, RCDP5, is caused by loss of the PEX5 long isoform. Hum Mol Genet 2015; 24 (20) 5845-5854
  • 45 Bams-Mengerink AM, Koelman JH, Waterham H, Barth PG, Poll-The BT. The neurology of rhizomelic chondrodysplasia punctata. Orphanet J Rare Dis 2013; 8: 174
  • 46 Bams-Mengerink AM, Majoie CBLM, Duran M , et al. MRI of the brain and cervical spinal cord in rhizomelic chondrodysplasia punctata. Neurology 2006; 66 (6) 798-803 , discussion 789
  • 47 Braverman N, Chen L, Lin P , et al. Mutation analysis of PEX7 in 60 probands with rhizomelic chondrodysplasia punctata and functional correlations of genotype with phenotype. Hum Mutat 2002; 20 (4) 284-297
  • 48 Spranger JW, Opitz JM, Bidder U. Heterogeneity of Chondrodysplasia punctata. Humangenetik 1971; 11 (3) 190-212
  • 49 Huffnagel IC, Clur S-AB, Bams-Mengerink AM , et al. Rhizomelic chondrodysplasia punctata and cardiac pathology. J Med Genet 2013; 50 (7) 419-424
  • 50 Irving MD, Chitty LS, Mansour S, Hall CM. Chondrodysplasia punctata: a clinical diagnostic and radiological review. Clin Dysmorphol 2008; 17 (4) 229-241
  • 51 White AL, Modaff P, Holland-Morris F, Pauli RM. Natural history of rhizomelic chondrodysplasia punctata. Am J Med Genet A 2003; 118A (4) 332-342
  • 52 van Geel BM, Bezman L, Loes DJ, Moser HW, Raymond GV. Evolution of phenotypes in adult male patients with X-linked adrenoleukodystrophy. Ann Neurol 2001; 49 (2) 186-194
  • 53 Dubey P, Raymond GV, Moser AB, Kharkar S, Bezman L, Moser HW. Adrenal insufficiency in asymptomatic adrenoleukodystrophy patients identified by very long-chain fatty acid screening. J Pediatr 2005; 146 (4) 528-532
  • 54 Moser HW, Moser AB, Smith KD , et al. Adrenoleukodystrophy: phenotypic variability and implications for therapy. J Inherit Metab Dis 1992; 15 (4) 645-664
  • 55 van Geel BM, Koelman JH, Barth PG, Ongerboer de Visser BW. Peripheral nerve abnormalities in adrenomyeloneuropathy: a clinical and electrodiagnostic study. Neurology 1996; 46 (1) 112-118
  • 56 Assies J, Gooren LJ, Van Geel B, Barth PG. Signs of testicular insufficiency in adrenomyeloneuropathy and neurologically asymptomatic X-linked adrenoleukodystrophy: a retrospective study. Int J Androl 1997; 20 (5) 315-321
  • 57 Kemp S, Berger J, Aubourg P. X-linked adrenoleukodystrophy: clinical, metabolic, genetic and pathophysiological aspects. Biochim Biophys Acta 2012; 1822 (9) 1465-1474
  • 58 Engelen M, Kemp S, de Visser M , et al. X-linked adrenoleukodystrophy (X-ALD): clinical presentation and guidelines for diagnosis, follow-up and management. Orphanet J Rare Dis 2012; 7: 51
  • 59 Engelen M, Barbier M, Dijkstra IME , et al. X-linked adrenoleukodystrophy in women: a cross-sectional cohort study. Brain 2014; 137 (Pt 3): 693-706
  • 60 Plant GR, Hansell DM, Gibberd FB, Sidey MC. Skeletal abnormalities in Refsum's disease (heredopathia atactica polyneuritiformis). Br J Radiol 1990; 63 (751) 537-541
  • 61 Wanders R, Jakobs C, Skjeldal O. Refsum disease. In: Scriver C, Beaudet A, Sly W, eds. The Metabolic and Molecular Bases of Inherited Disease. New York, NY: McGraw-Hill; 2001: 3303-3321
  • 62 Jansen GA, Waterham HR, Wanders RJA. Molecular basis of Refsum disease: sequence variations in phytanoyl-CoA hydroxylase (PHYH) and the PTS2 receptor (PEX7). Hum Mutat 2004; 23 (3) 209-218
  • 63 Fiskerstrand T, Knappskog P, Majewski J, Wanders RJ, Boman H, Bindoff LA. A novel Refsum-like disorder that maps to chromosome 20. Neurology 2009; 72 (1) 20-27
  • 64 Ferdinandusse S, Denis S, Clayton PT , et al. Mutations in the gene encoding peroxisomal alpha-methylacyl-CoA racemase cause adult-onset sensory motor neuropathy. Nat Genet 2000; 24 (2) 188-191
  • 65 Haugarvoll K, Johansson S, Tzoulis C , et al. MRI characterisation of adult onset alpha-methylacyl-coA racemase deficiency diagnosed by exome sequencing. Orphanet J Rare Dis 2013; 8: 1
  • 66 Clarke CE, Alger S, Preece MA , et al. Tremor and deep white matter changes in alpha-methylacyl-CoA racemase deficiency. Neurology 2004; 63 (1) 188-189
  • 67 Setchell KDR, Heubi JE, Bove KE , et al. Liver disease caused by failure to racemize trihydroxycholestanoic acid: gene mutation and effect of bile acid therapy. Gastroenterology 2003; 124 (1) 217-232
  • 68 Thompson SA, Calvin J, Hogg S, Ferdinandusse S, Wanders RJA, Barker RA. Relapsing encephalopathy in a patient with alpha-methylacyl-CoA racemase deficiency. J Neurol Neurosurg Psychiatry 2008; 79 (4) 448-450
  • 69 Kapina V, Sedel F, Truffert A , et al. Relapsing rhabdomyolysis due to peroxisomal alpha-methylacyl-coa racemase deficiency. Neurology 2010; 75 (14) 1300-1302
  • 70 Dick D, Horvath R, Chinnery PF. AMACR mutations cause late-onset autosomal recessive cerebellar ataxia. Neurology 2011; 76 (20) 1768-1770
  • 71 Stewart MW, Vavra MW, Whaley NR. Fundus findings in a patient with α-methylacyl-CoA racemase deficiency. Retin Cases Brief Rep 2011; 5 (3) 262-266
  • 72 Smith EH, Gavrilov DK, Oglesbee D , et al. An adult onset case of alpha-methyl-acyl-CoA racemase deficiency. J Inherit Metab Dis 2010; 33 (Suppl. 03) S349-S353
  • 73 Pierce SB, Walsh T, Chisholm KM , et al. Mutations in the DBP-deficiency protein HSD17B4 cause ovarian dysgenesis, hearing loss, and ataxia of Perrault Syndrome. Am J Hum Genet 2010; 87 (2) 282-288
  • 74 Lines MA, Jobling R, Brady L , et al; Canadian Pediatric Genetic Disorders Sequencing Consortium (FORGE Canada). Peroxisomal D-bifunctional protein deficiency: three adults diagnosed by whole-exome sequencing. Neurology 2014; 82 (11) 963-968
  • 75 Heymans HS, Oorthuys JW, Nelck G, Wanders RJ, Schutgens RB. Rhizomelic chondrodysplasia punctata: another peroxisomal disorder. N Engl J Med 1985; 313 (3) 187-188
  • 76 van den Brink DM, Brites P, Haasjes J , et al. Identification of PEX7 as the second gene involved in Refsum disease. Am J Hum Genet 2003; 72 (2) 471-477
  • 77 Itzkovitz B, Jiralerspong S, Nimmo G , et al. Functional characterization of novel mutations in GNPAT and AGPS, causing rhizomelic chondrodysplasia punctata (RCDP) types 2 and 3. Hum Mutat 2012; 33 (1) 189-197
  • 78 Theda C, Woody RC, Naidu S, Moser AB, Moser HW. Increased very long chain fatty acids in patients on a ketogenic diet: a cause of diagnostic confusion. J Pediatr 1993; 122 (5 Pt 1): 724-726
  • 79 Lam C, Wong D, Cederbaum S, Lim B, Qu Y. Peanut consumption increases levels of plasma very long chain fatty acids in humans. Mol Genet Metab 2012; 107 (3) 620-622
  • 80 Moser HW, Mahmood A, Raymond GV. X-linked adrenoleukodystrophy. Nat Clin Pract Neurol 2007; 3 (3) 140-151
  • 81 Hubbard WC, Moser AB, Liu AC , et al. Newborn screening for X-linked adrenoleukodystrophy (X-ALD): validation of a combined liquid chromatography-tandem mass spectrometric (LC-MS/MS) method. Mol Genet Metab 2009; 97 (3) 212-220
  • 82 Wilson JM, Jungner YG. Principles and practice of mass screening for disease [in Spanish]. Bol Oficina Sanit Panam 1968; 65 (4) 281-393
  • 83 Herndon Jr JH, Steinberg D, Uhlendorf BW. Refsum's disease: defective oxidation of phytanic acid in tissue cultures derived from homozygotes and heterozygotes. N Engl J Med 1969; 281 (19) 1034-1038
  • 84 Baldwin EJ, Gibberd FB, Harley C, Sidey MC, Feher MD, Wierzbicki AS. The effectiveness of long-term dietary therapy in the treatment of adult Refsum disease. J Neurol Neurosurg Psychiatry 2010; 81 (9) 954-957
  • 85 Ferdinandusse S, Overmars H, Denis S, Waterham HR, Wanders RJ, Vreken P. Plasma analysis of di- and trihydroxycholestanoic acid diastereoisomers in peroxisomal alpha-methylacyl-CoA racemase deficiency. J Lipid Res 2001; 42 (1) 137-141
  • 86 van der Knaap MS, Wassmer E, Wolf NI , et al. MRI as diagnostic tool in early-onset peroxisomal disorders. Neurology 2012; 78 (17) 1304-1308
  • 87 Barth PG, Gootjes J, Bode H, Vreken P, Majoie CB, Wanders RJ. Late onset white matter disease in peroxisome biogenesis disorder. Neurology 2001; 57 (11) 1949-1955
  • 88 Barth PG, Majoie CBLM, Gootjes J , et al. Neuroimaging of peroxisome biogenesis disorders (Zellweger spectrum) with prolonged survival. Neurology 2004; 62 (3) 439-444
  • 89 Kurian MA, Ryan S, Besley GTN, Wanders RJA, King MD. Straight-chain acyl-CoA oxidase deficiency presenting with dysmorphia, neurodevelopmental autistic-type regression and a selective pattern of leukodystrophy. J Inherit Metab Dis 2004; 27 (1) 105-108
  • 90 Wells TR, Landing BH, Bostwick FH. Studies of vertebral coronal cleft in rhizomelic chondrodysplasia punctata. Pediatr Pathol 1992; 12 (4) 593-600
  • 91 Melhem ER, Loes DJ, Georgiades CS, Raymond GV, Moser HW. X-linked adrenoleukodystrophy: the role of contrast-enhanced MR imaging in predicting disease progression. AJNR Am J Neuroradiol 2000; 21 (5) 839-844
  • 92 Wang S, Wu J-M, Cheng Y-S. Asymmetric cerebral lesion pattern in X-linked adrenoleukodystrophy. J Chin Med Assoc 2006; 69 (8) 383-386
  • 93 Loes DJ, Fatemi A, Melhem ER , et al. Analysis of MRI patterns aids prediction of progression in X-linked adrenoleukodystrophy. Neurology 2003; 61 (3) 369-374
  • 94 Loes DJ, Hite S, Moser H , et al. Adrenoleukodystrophy: a scoring method for brain MR observations. AJNR Am J Neuroradiol 1994; 15 (9) 1761-1766
  • 95 Van der Knaap M, Valk J. X-linked adrenoleukodystrophy. In: Heilmann U, ed. Magnetic Resonance of Myelination and Myelin Disorders. 3rd ed. Berlin-Heidelberg-New York: Springer; 2005: 176-190
  • 96 Smith SA, Golay X, Fatemi A , et al. Quantitative magnetization transfer characteristics of the human cervical spinal cord in vivo: application to adrenomyeloneuropathy. Magn Reson Med 2009; 61 (1) 22-27
  • 97 Bompaire F, Marcaud V, Trionnaire EL, Sedel F, Levade T. Refsum Disease Presenting with a Late-Onset Leukodystrophy. JIMD Rep 2015; 19: 7-10
  • 98 Poll-The BT, Engelen M. Peroxisomal leukoencephalopathy. Semin Neurol 2012; 32 (1) 42-50
  • 99 Shapiro E, Krivit W, Lockman L , et al. Long-term effect of bone-marrow transplantation for childhood-onset cerebral X-linked adrenoleukodystrophy. Lancet 2000; 356 (9231) 713-718
  • 100 Miller WP, Rothman SM, Nascene D , et al. Outcomes after allogeneic hematopoietic cell transplantation for childhood cerebral adrenoleukodystrophy: the largest single-institution cohort report. Blood 2011; 118 (7) 1971-1978
  • 101 Devaney SA, Palomaki GE, Scott JA, Bianchi DW. Noninvasive fetal sex determination using cell-free fetal DNA: a systematic review and meta-analysis. JAMA 2011; 306 (6) 627-636