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Volumn 36, Issue 5, 2013, Pages 859-868

Krabbe disease in adults: Phenotypic and genotypic update from a series of 11 cases and a review

Author keywords

[No Author keywords available]

Indexed keywords

ARGININE; CYTOSINE; GALACTOSYLCERAMIDASE; GUANINE; TYROSINE;

EID: 84884349739     PISSN: 01418955     EISSN: 15732665     Source Type: Journal    
DOI: 10.1007/s10545-012-9560-4     Document Type: Article
Times cited : (92)

References (43)
  • 1
    • 0036236499 scopus 로고    scopus 로고
    • Familial adult onset of Krabbe's disease resembling hereditary spastic paraplegia with normal neuroimaging
    • 11971051 10.1136/jnnp.72.5.635 1:STN:280:DC%2BD383mtVSjtQ%3D%3D
    • Bajaj NP, Waldman A, Orrell R, Wood NW, Bhatia KP (2002) Familial adult onset of Krabbe's disease resembling hereditary spastic paraplegia with normal neuroimaging. J Neurol Neurosurg Psychiatry 72:635-638
    • (2002) J Neurol Neurosurg Psychiatry , vol.72 , pp. 635-638
    • Bajaj, N.P.1    Waldman, A.2    Orrell, R.3    Wood, N.W.4    Bhatia, K.P.5
  • 3
    • 0031024119 scopus 로고    scopus 로고
    • Adult-onset Krabbe's disease in siblings with novel mutations in the galactocerebrosidase gene
    • 9005874 10.1002/ana.410410119 1:STN:280:DyaK2s7lvVGitg%3D%3D
    • Bernardini GL, Herrera DG, Carson D, et al. (1997) Adult-onset Krabbe's disease in siblings with novel mutations in the galactocerebrosidase gene. Ann Neurol 41:111-114
    • (1997) Ann Neurol , vol.41 , pp. 111-114
    • Bernardini, G.L.1    Herrera, D.G.2    Carson, D.3
  • 4
    • 19244362249 scopus 로고    scopus 로고
    • Molecular heterogeneity of late-onset forms of globoid-cell leukodystrophy
    • 8940268
    • De Gasperi R, Gama Sosa MA, Sartorato EL, et al. (1996) Molecular heterogeneity of late-onset forms of globoid-cell leukodystrophy. Am J Hum Genet 59:1233-1242
    • (1996) Am J Hum Genet , vol.59 , pp. 1233-1242
    • De Gasperi, R.1    Gama Sosa, M.A.2    Sartorato, E.L.3
  • 6
    • 58149215827 scopus 로고    scopus 로고
    • Development and evaluation of quality control dried blood spot materials in newborn screening for lysosomal storage disorders
    • 18988750 10.1373/clinchem.2008.111864
    • De Jesus VR, Zhang XK, Keutzer J, et al. (2009) Development and evaluation of quality control dried blood spot materials in newborn screening for lysosomal storage disorders. Clin Chem 55:158-164
    • (2009) Clin Chem , vol.55 , pp. 158-164
    • De Jesus, V.R.1    Zhang, X.K.2    Keutzer, J.3
  • 7
    • 0034125529 scopus 로고    scopus 로고
    • Evidence of diffuse brain pathology and unspecific genetic characterization in a patient with an atypical form of adult-onset Krabbe disease
    • 10787123 10.1007/s004150050571
    • De Stefano N, Dotti MT, Mortilla M, et al. (2000) Evidence of diffuse brain pathology and unspecific genetic characterization in a patient with an atypical form of adult-onset Krabbe disease. J Neurol 247:226-228
    • (2000) J Neurol , vol.247 , pp. 226-228
    • De Stefano, N.1    Dotti, M.T.2    Mortilla, M.3
  • 8
    • 84859925611 scopus 로고    scopus 로고
    • Later onset phenotypes of Krabbe Disease: Results of the world-wide registry
    • 22520351 10.1016/j.pediatrneurol.2012.02.023
    • Duffner PK, Barczykowski A, Kay DM, et al. (2012) Later onset phenotypes of Krabbe Disease: results of the world-wide registry. Pediatr Neurol 46:298-306
    • (2012) Pediatr Neurol , vol.46 , pp. 298-306
    • Duffner, P.K.1    Barczykowski, A.2    Kay, D.M.3
  • 9
    • 20844453744 scopus 로고    scopus 로고
    • Transplantation of umbilical-cord blood in babies with infantile Krabbe's disease
    • 15901860 10.1056/NEJMoa042604 1:CAS:528:DC%2BD2MXkt1Kltrg%3D
    • Escolar ML, Poe MD, Provenzale JM, et al. (2005) Transplantation of umbilical-cord blood in babies with infantile Krabbe's disease. N Engl J Med 352:2069-2081
    • (2005) N Engl J Med , vol.352 , pp. 2069-2081
    • Escolar, M.L.1    Poe, M.D.2    Provenzale, J.M.3
  • 10
    • 0033832486 scopus 로고    scopus 로고
    • MR imaging and proton MR spectroscopy in adult Krabbe disease
    • 11003282 1:STN:280:DC%2BD3cvkvFejsg%3D%3D
    • Farina L, Bizzi A, Finocchiaro G (2000) MR imaging and proton MR spectroscopy in adult Krabbe disease. AJNR Am J Neuroradiol 21:1478-1482
    • (2000) AJNR Am J Neuroradiol , vol.21 , pp. 1478-1482
    • Farina, L.1    Bizzi, A.2    Finocchiaro, G.3
  • 11
    • 0242516059 scopus 로고    scopus 로고
    • Gait disorders with insidious progression in a 60-year old woman
    • 1:STN:280:DC%2BD3sznvVektw%3D%3D
    • Fontaine B, Thenin JP, Viader F (2003) Gait disorders with insidious progression in a 60-year old woman. Rev Neurol (Paris) 159:695-699
    • (2003) Rev Neurol (Paris) , vol.159 , pp. 695-699
    • Fontaine, B.1    Thenin, J.P.2    Viader, F.3
  • 12
    • 0026005993 scopus 로고
    • Late onset globoid cell leukodystrophy
    • 1800646 10.1136/jnnp.54.11.1011 1:STN:280:DyaK387ptlyqsw%3D%3D
    • Grewal RP, Petronas N, Barton NW (1991) Late onset globoid cell leukodystrophy. J Neurol Neurosurg Psychiatry 54:1011-1012
    • (1991) J Neurol Neurosurg Psychiatry , vol.54 , pp. 1011-1012
    • Grewal, R.P.1    Petronas, N.2    Barton, N.W.3
  • 13
    • 0012705895 scopus 로고
    • Diagnosis of Krabbe's infantile leucodystrophy
    • 13951860 10.1136/jnnp.26.3.195 1:STN:280:DyaF387ktlGrtg%3D%3D
    • Hagberg B, Sourander P, Svennerholm L (1963) Diagnosis of Krabbe's infantile leucodystrophy. J Neurol Neurosurg Psychiatry 26:195-198
    • (1963) J Neurol Neurosurg Psychiatry , vol.26 , pp. 195-198
    • Hagberg, B.1    Sourander, P.2    Svennerholm, L.3
  • 14
    • 0014520157 scopus 로고
    • Infantile globoid cell leukodystrophy (Krabbe's disease). A clinical and genetic study of 32 Swedish cases 1953-1967
    • 5409293 10.1055/s-0028-1091865 1:STN:280:DyaE38%2Fjt1Smug%3D%3D
    • Hagberg B, Kollberg H, Sourander P, Akesson H (1969) Infantile globoid cell leukodystrophy (Krabbe's disease). A clinical and genetic study of 32 Swedish cases 1953-1967. Neuropadiatrie 1:74-88
    • (1969) Neuropadiatrie , vol.1 , pp. 74-88
    • Hagberg, B.1    Kollberg, H.2    Sourander, P.3    Akesson, H.4
  • 15
    • 0036157816 scopus 로고    scopus 로고
    • Residual galactosylsphingosine (psychosine) beta-galactosidase activities and associated GALC mutations in late and very late onset Krabbe disease
    • 11814461 10.1016/S0009-8981(01)00791-4 1:CAS:528:DC%2BD38Xos1Cqtg%3D%3D
    • Harzer K, Knoblich R, Rolfs A, Bauer P, Eggers J (2002) Residual galactosylsphingosine (psychosine) beta-galactosidase activities and associated GALC mutations in late and very late onset Krabbe disease. Clin Chim Acta 317:77-84
    • (2002) Clin Chim Acta , vol.317 , pp. 77-84
    • Harzer, K.1    Knoblich, R.2    Rolfs, A.3    Bauer, P.4    Eggers, J.5
  • 16
    • 0141447276 scopus 로고    scopus 로고
    • Adult onset Krabbe disease may mimic motor neurone disease
    • 12948479 10.1016/S0967-5868(02)00302-8 1:STN:280:DC%2BD3svhtVekug%3D%3D
    • Henderson RD, MacMillan JC, Bradfield JM (2003) Adult onset Krabbe disease may mimic motor neurone disease. J Clin Neurosci 10:638-639
    • (2003) J Clin Neurosci , vol.10 , pp. 638-639
    • Henderson, R.D.1    Macmillan, J.C.2    Bradfield, J.M.3
  • 17
    • 4143059134 scopus 로고    scopus 로고
    • Krabbe disease: Neurophysiologic studies and MRI correlations
    • 15326231 10.1212/01.WNL.0000134651.38196.F8
    • Husain AM, Altuwaijri M, Aldosari M (2004) Krabbe disease: neurophysiologic studies and MRI correlations. Neurology 63:617-620
    • (2004) Neurology , vol.63 , pp. 617-620
    • Husain, A.M.1    Altuwaijri, M.2    Aldosari, M.3
  • 18
    • 0032841002 scopus 로고    scopus 로고
    • Protracted course of Krabbe disease in an adult patient bearing a novel mutation
    • 10448809 10.1001/archneur.56.8.1014 1:STN:280:DyaK1Mzns1Sguw%3D%3D
    • Jardim LB, Giugliani R, Pires RF, et al. (1999) Protracted course of Krabbe disease in an adult patient bearing a novel mutation. Arch Neurol 56:1014-1017
    • (1999) Arch Neurol , vol.56 , pp. 1014-1017
    • Jardim, L.B.1    Giugliani, R.2    Pires, R.F.3
  • 19
    • 0026536081 scopus 로고
    • Clinical onset and MRI features of Krabbe's disease in adolescence
    • 1583526 10.1136/jnnp.55.4.331 1:STN:280:DyaK383mtValsA%3D%3D
    • Kapoor R, McDonald WI, Crockard A, Moseley IF (1992) Clinical onset and MRI features of Krabbe's disease in adolescence. J Neurol Neurosurg Psychiatry 55:331-332
    • (1992) J Neurol Neurosurg Psychiatry , vol.55 , pp. 331-332
    • Kapoor, R.1    McDonald, W.I.2    Crockard, A.3    Moseley, I.F.4
  • 20
    • 0026410675 scopus 로고
    • Late-onset Krabbe disease (globoid cell leukodystrophy): Clinical and biochemical features of 15 cases
    • 1817026 10.1159/000112166 1:STN:280:DyaK383otlSquw%3D%3D
    • Kolodny EH, Raghavan S, Krivit W (1991) Late-onset Krabbe disease (globoid cell leukodystrophy): clinical and biochemical features of 15 cases. Dev Neurosci 13:232-239
    • (1991) Dev Neurosci , vol.13 , pp. 232-239
    • Kolodny, E.H.1    Raghavan, S.2    Krivit, W.3
  • 22
    • 0028827824 scopus 로고
    • Characterization of the large deletion in the GALC gene found in patients with Krabbe disease
    • 8634707 10.1093/hmg/4.12.2335 1:CAS:528:DyaK2MXpvFerurk%3D
    • Luzi P, Rafi MA, Wenger DA (1995) Characterization of the large deletion in the GALC gene found in patients with Krabbe disease. Hum Mol Genet 4:2335-2338
    • (1995) Hum Mol Genet , vol.4 , pp. 2335-2338
    • Luzi, P.1    Rafi, M.A.2    Wenger, D.A.3
  • 23
    • 0029937014 scopus 로고    scopus 로고
    • Multiple mutations in the GALC gene in a patient with adult-onset Krabbe disease
    • 8687180 10.1002/ana.410400119 1:CAS:528:DyaK28XltVahtL4%3D
    • Luzi P, Rafi MA, Wenger DA (1996) Multiple mutations in the GALC gene in a patient with adult-onset Krabbe disease. Ann Neurol 40:116-119
    • (1996) Ann Neurol , vol.40 , pp. 116-119
    • Luzi, P.1    Rafi, M.A.2    Wenger, D.A.3
  • 24
    • 0026409894 scopus 로고
    • Symptomatology of late onset Krabbe's leukodystrophy: The European experience
    • 1817027 10.1159/000112167 1:STN:280:DyaK383otlWjsg%3D%3D
    • Lyon G, Hagberg B, Evrard P, Allaire C, Pavone L, Vanier M (1991) Symptomatology of late onset Krabbe's leukodystrophy: the European experience. Dev Neurosci 13:240-244
    • (1991) Dev Neurosci , vol.13 , pp. 240-244
    • Lyon, G.1    Hagberg, B.2    Evrard, P.3    Allaire, C.4    Pavone, L.5    Vanier, M.6
  • 25
    • 84872686006 scopus 로고    scopus 로고
    • Peripheral neuropathy in late-onset Krabbe disease: Report of three cases
    • doi:10.1007/s10072-012-0956-6
    • Malandrini A, D'Eramo C, Palmeri S, et al. (2012) Peripheral neuropathy in late-onset Krabbe disease: report of three cases. Neurol Sci doi:10.1007/s10072-012-0956-6
    • (2012) Neurol Sci
    • Malandrini, A.1    D'Eramo, C.2    Palmeri, S.3
  • 26
    • 77954765365 scopus 로고    scopus 로고
    • Enhancing cranial nerves and cauda equina: An emerging magnetic resonance imaging pattern in metachromatic leukodystrophy and krabbe disease
    • 20446225 10.1055/s-0030-1249654 1:STN:280:DC%2BC3czhsFSntQ%3D%3D
    • Morana G, Biancheri R, Dirocco M, et al. (2009) Enhancing cranial nerves and cauda equina: an emerging magnetic resonance imaging pattern in metachromatic leukodystrophy and krabbe disease. Neuropediatrics 40:291-294
    • (2009) Neuropediatrics , vol.40 , pp. 291-294
    • Morana, G.1    Biancheri, R.2    Dirocco, M.3
  • 27
    • 0025753764 scopus 로고
    • Late onset Krabbe's leukodystrophy: A report of four cases
    • 2056315 10.1136/jnnp.54.4.293 1:STN:280:DyaK3M3nslOisw%3D%3D
    • Phelps M, Aicardi J, Vanier MT (1991) Late onset Krabbe's leukodystrophy: a report of four cases. J Neurol Neurosurg Psychiatry 54:293-296
    • (1991) J Neurol Neurosurg Psychiatry , vol.54 , pp. 293-296
    • Phelps, M.1    Aicardi, J.2    Vanier, M.T.3
  • 28
    • 0029156759 scopus 로고
    • A large deletion together with a point mutation in the GALC gene is a common mutant allele in patients with infantile Krabbe disease
    • 7581365 10.1093/hmg/4.8.1285 1:CAS:528:DyaK2MXnt1alsbs%3D
    • Rafi MA, Luzi P, Chen YQ, Wenger DA (1995) A large deletion together with a point mutation in the GALC gene is a common mutant allele in patients with infantile Krabbe disease. Hum Mol Genet 4:1285-1289
    • (1995) Hum Mol Genet , vol.4 , pp. 1285-1289
    • Rafi, M.A.1    Luzi, P.2    Chen, Y.Q.3    Wenger, D.A.4
  • 29
    • 0036226311 scopus 로고    scopus 로고
    • Peripheral neuropathy with hypomyelinating features in adult-onset Krabbe's disease
    • 12062257 10.1016/S0960-8966(01)00285-1 1:STN:280:DC%2BD38zhvFSksg%3D%3D
    • Sabatelli M, Quaranta L, Madia F, et al. (2002) Peripheral neuropathy with hypomyelinating features in adult-onset Krabbe's disease. Neuromuscul Disord 12:386-391
    • (2002) Neuromuscul Disord , vol.12 , pp. 386-391
    • Sabatelli, M.1    Quaranta, L.2    Madia, F.3
  • 30
    • 0030712288 scopus 로고    scopus 로고
    • Adult-onset Krabbe disease with homozygous T1853C mutation in the galactocerebrosidase gene. Unusual MRI findings of corticospinal tract demyelination
    • 9371928 10.1212/WNL.49.5.1392 1:STN:280:DyaK1c%2FjvFWqtQ%3D%3D
    • Satoh JI, Tokumoto H, Kurohara K, et al. (1997) Adult-onset Krabbe disease with homozygous T1853C mutation in the galactocerebrosidase gene. Unusual MRI findings of corticospinal tract demyelination. Neurology 49:1392-1399
    • (1997) Neurology , vol.49 , pp. 1392-1399
    • Satoh, J.I.1    Tokumoto, H.2    Kurohara, K.3
  • 31
    • 45849120948 scopus 로고    scopus 로고
    • Leukoencephalopathies associated with Inborn Errors of Metabolism in adults: A diagnostic approach
    • 18344012 10.1007/s10545-008-0778-0 1:CAS:528:DC%2BD1cXnsVSqtbs%3D
    • Sedel F, Tourbah A, Fontaine B, Lubetzki C, Baumann N, Saudubray JM, Lyon-Caen O (2008) Leukoencephalopathies associated with Inborn Errors of Metabolism in adults: a diagnostic approach. J Inherit Metab Dis 31:295-307
    • (2008) J Inherit Metab Dis , vol.31 , pp. 295-307
    • Sedel, F.1    Tourbah, A.2    Fontaine, B.3    Lubetzki, C.4    Baumann, N.5    Saudubray, J.M.6    Lyon-Caen, O.7
  • 32
    • 33747059890 scopus 로고    scopus 로고
    • Peripheral neuropathy in Krabbe disease: Effect of hematopoietic stem cell transplantation
    • 16864820 10.1212/01.wnl.0000230156.01228.33
    • Siddiqi ZA, Sanders DB, Massey JM (2006) Peripheral neuropathy in Krabbe disease: effect of hematopoietic stem cell transplantation. Neurology 67:268-272
    • (2006) Neurology , vol.67 , pp. 268-272
    • Siddiqi, Z.A.1    Sanders, D.B.2    Massey, J.M.3
  • 33
    • 0031932297 scopus 로고    scopus 로고
    • Twenty five years of the "psychosine hypothesis": A personal perspective of its history and present status
    • 9482237 10.1023/A:1022436928925 1:CAS:528:DyaK1cXosFGhug%3D%3D
    • Suzuki K (1998) Twenty five years of the "psychosine hypothesis": a personal perspective of its history and present status. Neurochem Res 23:251-259
    • (1998) Neurochem Res , vol.23 , pp. 251-259
    • Suzuki, K.1
  • 34
    • 0014806327 scopus 로고
    • Globoid cell leucodystrophy (Krabbe's disease): Deficiency of galactocerebroside beta-galactosidase
    • 5271165 10.1073/pnas.66.2.302 1:CAS:528:DyaE3cXks1Chtr4%3D
    • Suzuki K, Suzuki Y (1970) Globoid cell leucodystrophy (Krabbe's disease): deficiency of galactocerebroside beta-galactosidase. Proc Natl Acad Sci U S A 66:302-309
    • (1970) Proc Natl Acad Sci U S A , vol.66 , pp. 302-309
    • Suzuki, K.1    Suzuki, Y.2
  • 35
    • 0018821962 scopus 로고
    • Krabbe disease: A galactosylsphingosine (psychosine) lipidosis
    • 7354254 1:CAS:528:DyaL3cXhsVCmsrw%3D
    • Svennerholm L, Vanier MT, Mansson JE (1980) Krabbe disease: a galactosylsphingosine (psychosine) lipidosis. J Lipid Res 21:53-64
    • (1980) J Lipid Res , vol.21 , pp. 53-64
    • Svennerholm, L.1    Vanier, M.T.2    Mansson, J.E.3
  • 36
    • 0021749671 scopus 로고
    • Galactosylceramide lipidosis: Novel presentation as a slowly progressive spinocerebellar degeneration
    • 6095734 10.1002/ana.410160515 1:STN:280:DyaL2M%2FntV2lsg%3D%3D
    • Thomas PK, Halpern JP, King RH, Patrick D (1984) Galactosylceramide lipidosis: novel presentation as a slowly progressive spinocerebellar degeneration. Ann Neurol 16:618-620
    • (1984) Ann Neurol , vol.16 , pp. 618-620
    • Thomas, P.K.1    Halpern, J.P.2    King, R.H.3    Patrick, D.4
  • 37
    • 0031451780 scopus 로고    scopus 로고
    • Adult onset Krabbe's leukodystrophy: A report of 2 cases
    • 9449482 10.1111/j.1600-0404.1997.tb00308.x 1:STN:280:DyaK1c7gvFGgtA%3D%3D
    • Turazzini M, Beltramello A, Bassi R, Del Colle R, Silvestri M (1997) Adult onset Krabbe's leukodystrophy: a report of 2 cases. Acta Neurol Scand 96:413-415
    • (1997) Acta Neurol Scand , vol.96 , pp. 413-415
    • Turazzini, M.1    Beltramello, A.2    Bassi, R.3    Del Colle, R.4    Silvestri, M.5
  • 39
    • 0025944348 scopus 로고
    • Globoid cell leukodystrophy: A family with both late-infantile and adult type
    • 1891085 10.1212/WNL.41.9.1382 1:STN:280:DyaK3Mzmsleitg%3D%3D
    • Verdru P, Lammens M, Dom R, Van Elsen A, Carton H (1991) Globoid cell leukodystrophy: a family with both late-infantile and adult type. Neurology 41:1382-1384
    • (1991) Neurology , vol.41 , pp. 1382-1384
    • Verdru, P.1    Lammens, M.2    Dom, R.3    Van Elsen, A.4    Carton, H.5
  • 40
    • 34548482529 scopus 로고    scopus 로고
    • The earliest MR imaging and proton MR spectroscopy abnormalities in adult-onset Krabbe disease
    • 17824908 10.1111/j.1600-0404.2007.00867.x 1:STN:280: DC%2BD2srivVagsg%3D%3D
    • Wang C, Melberg A, Weis J, Månsson JE, Raininko R (2007) The earliest MR imaging and proton MR spectroscopy abnormalities in adult-onset Krabbe disease. Acta Neurol Scand 116:268-272
    • (2007) Acta Neurol Scand , vol.116 , pp. 268-272
    • Wang, C.1    Melberg, A.2    Weis, J.3    Månsson, J.E.4    Raininko, R.5
  • 41
    • 82455194617 scopus 로고    scopus 로고
    • Krabbe disease
    • R.A. Pagon T.D. Bird C.R. Dolan K. Stephens M. Adam (eds) University of Washington Seattle
    • Wenger DA (2000) Krabbe disease. In: Pagon RA, Bird TD, Dolan CR, Stephens K, Adam MP (eds) GeneReviews™ [Internet]. University of Washington, Seattle
    • (2000) GeneReviews™ [Internet]
    • Wenger, D.A.1
  • 42
    • 0002054185 scopus 로고    scopus 로고
    • Galctosylceramide lipidosis: Globoid cell leukodystrophy (Krabbe disease)
    • C.R. Scriver A.L. Beaudet W.S. Sly D. Valle B. Childs B. Vogelstein (eds) McGraw Hill New York
    • Wenger DA, Suzuki K, Suzuki Y (2001) Galctosylceramide lipidosis: globoid cell leukodystrophy (Krabbe disease). In: Scriver CR, Beaudet AL, Sly WS, Valle D, Childs B, Vogelstein B (eds) The metabolic and molecular bases of inherited disease. McGraw Hill, New York, pp 3669-3694
    • (2001) The Metabolic and Molecular Bases of Inherited Disease , pp. 3669-3694
    • Wenger, D.A.1    Suzuki, K.2    Suzuki, Y.3
  • 43
    • 77950351234 scopus 로고    scopus 로고
    • Multiplex lysosomal enzyme activity assay on dried blood spots using tandem mass spectrometry
    • 20077085 10.1007/978-1-60761-459-3-32 1:CAS:528:DC%2BC3cXnt12kt7g%3D
    • Zhang XK, Elbin CS, Turecek F, et al. (2010) Multiplex lysosomal enzyme activity assay on dried blood spots using tandem mass spectrometry. Methods Mol Biol 603:339-350
    • (2010) Methods Mol Biol , vol.603 , pp. 339-350
    • Zhang, X.K.1    Elbin, C.S.2    Turecek, F.3


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