Yıl: 2015 Cilt: 32 Sayı: 4 Sayfa Aralığı: 317 - 322 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Transcobalamin II Deficiency in Four Cases with Novel Mutations

Öz:
Amaç: Transkobalamin II eksikliği nadir bir kalıtsal B12 vitamini bozukluğudur. Defektin B12 vitamininin transportu ile ilgili olması nedeniyle hastalar normal ya da yüksek B12 vitamini düzeylerine eşlik eden yüksek homosistein ve metilmalonik asit düzeylerine sahiptir.Gereç ve Yöntemler: Bu çalışmada transkobalamin II eksikliği tanısı alan dört hasta sunulmuştur. Bu hastalarda daha önce bildirilmemiş yeni mutasyonlar saptanmıştır. Bulgular: Hastaların ikisinde aynı büyük delesyon olduğu görülmüştür (homozigot c.1106+1516-1222+1231del). Sonuç: Pansitopeni, büyüme geriliği, ishal ya da kusması olan tüm bebeklerde transcobalamin II eksikliği ayırıcı tanıda düşünülmelidir
Anahtar Kelime:

Konular: Hematoloji

Yeni Mutasyonu Olan Dört Transkobalamin II Eksikliği Olgusu

Öz:
Objective: Transcobalamin II deficiency is one of the rare causes of inherited vitamin B12 disorders in which the patients have characteristically normal or high vitamin B12 levels related to the transport defect of vitamin B12 into the cell, ending up with intracellular cobalamin depletion and high homocysteine and methylmalonic acid levels. Materials and Methods: Herein, we describe the findings at presentation of four patients who were diagnosed to have transcobalamin II deficiency with novel mutations.Results: These patients with transcobalamin II deficiency were found to have novel mutations, of whom 2 had the same large deletion (homozygous c.1106+1516-1222+1231del). Conclusion: Transcobalamin II deficiency should be considered in differential diagnosis of any infant with pancytopenia, failure to thrive, diarrhea, and vomiting
Anahtar Kelime:

Konular: Hematoloji
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
  • Kanra G, Cetin M, Unal S, Haliloglu G, Akça T, Akalan N, Kara A. Answer to hypotonia: a simple hemogram. J Child Neurol 2005;20:930-931.
  • Schiff M, Ogier de Baulny H, Bard G, Barlogis V, Hamel C, Moat SJ, Odent S, Shortland G, Touati G, Giraudier S. Should transcobalamin deficiency be treated aggressively? J Inherit Metab Dis 2010;33:223-229.
  • Rosenblatt DS, Fenton WA. Inherited disorders of folate and cobalamin transport and metabolism. In: Budet AL, Valle D, Sly W (eds). The Metabolic and Molecular Bases of Inherited Disease. New York, McGraw Hill, 2001.
  • Oberley MJ, Yang DT. Laboratory testing for cobalamin deficiency in megaloblastic anemia. Am J Hematol 2013;88:522-526.
  • Meyers PA, Carmel R. Hereditary transcobalamin II deficiency with subnormal serum cobalamin levels. Pediatrics 1984;74:866-871.
  • Arwert F, Porck HJ, Frater-Schröder M, Brahe C, Geurts van Kessel A, Westerveld A, Meera Khan P, Zang K, Frants RR, Kortbeek HE, Erikkson AW. Assignment of human transcobalamin II (TC2) to chromosome 22 using somatic cell hybrids and monosomic meningioma cells. Hum Genet 1986;74:378-381.
  • Regec A, Quadros EV, Platica O, Rothenberg SP. The cloning and characterization of the human transcobalamin II gene. Blood 1995;85:2711-2719.
  • Li N, Seetharam S, Seetharam B. Genomic structure of human transcobalamin II: comparison to human intrinsic factor and transcobalamin I. Biochem Biophys Res Commun 1995;208:756-764.
  • Li N, Rosenblatt DS, Kamen BA, Seetharam S, Seetharam B. Identification of two mutant alleles of transcobalamin II in an affected family. Hum Mol Genet 1994;3:1835-1840.
  • Li N, Rosenblatt DS, Seetharam B. Nonsense mutations in human transcobalamin II deficiency. Biochem Biophys Res Commun 1994;204:1111-1118.
  • Namour F, Helfer AC, Quadros EV, Alberto JM, Bibi HM, Orning L, Rosenblatt DS, Jean-Louis G. Transcobalamin deficiency due to activation of an intra exonic cryptic splice site. Br J Haematol 2003;123:915-920.
  • Ratschmann R, Minkov M, Kis A, Hung C, Rupar T, Mühl A, Fowler B, Nexo E, Bodamer OA. Transcobalamin II deficiency at birth. Mol Genet Metab 2009;98:285-288.
  • Hakami N, Neiman PE, Canellos GP, Lazerson J. Neonatal megaloblastic anemia due to inherited transcobalamin II deficiency in two siblings. N Engl J Med 1971;285:1163- 1170.
  • Hall CA. The neurologic aspects of transcobalamin II deficiency. Br J Haematol 1992;80:117-120.
  • Watkins D, Whitehead VM, Rosenblatt D. Megaloblastic anemia. In: Nathan DG, Orkin SH (eds). Nathan and Oski's Hematology of Infancy and Childhood. Philadelphia, WB Saunders, 2009.
  • Tumino M, Meli C, Farruggia P, La Spina M, Faraci M, Castana C, Di Raimondo V, Alfano M, Pittalà A, Lo Nigro L, Russo G, Di Cataldo A. Clinical manifestations and management of four children with Pearson syndrome. Am J Med Genet A 2011;155:3063-3066.
  • Mishra A, Greaves R, Massie J. The relevance of sweat testing for the diagnosis of cystic fibrosis in the genomic era. Clin Biochem Rev 2005;26:135-153.
  • Boat TF, Acton JD. Cystic fibrosis. In: Kliegman RM, Behrman RE, Jenson HB, Stanton BF (eds). Nelson Textbook of Pediatrics. Philadelphia, WB Saunders, 2007.
  • Tanner SM, Li Z, Perko JD, Oner C, Cetin M, Altay C, Yurtsever Z, David KL, Faivre L, Ismail EA, Gräsbeck R, de la Chapelle A. Hereditary juvenile cobalamin deficiency caused by mutations in the intrinsic factor gene. Proc Natl Acad Sci USA 2005;102:4130-4133.
  • Yassin F, Rothenberg SP, Rao S, Gordon MM, Alpers DH, Quadros EV. Identification of a 4-base deletion in the gene in inherited intrinsic factor deficiency. Blood 2004;103:1515- 1517.
  • Evim MS, Erdöl Ş, Özdemir Ö, Baytan B, Güneş AM. Long- term outcome in children with nutritional vitamin B12 deficiency. Turk J Hematol 2011;28:286-293.
APA ÜNAL CANGÜL Ş, RUPAR T, YETGİN S, YARALI H, Dursun A, gürsel t, ÇETIN M (2015). Transcobalamin II Deficiency in Four Cases with Novel Mutations. , 317 - 322.
Chicago ÜNAL CANGÜL Şule,RUPAR Tony,YETGİN Sevgi,YARALI HÜSNİYE NEŞE,Dursun Ali,gürsel türkiz,ÇETIN MUALLA Transcobalamin II Deficiency in Four Cases with Novel Mutations. (2015): 317 - 322.
MLA ÜNAL CANGÜL Şule,RUPAR Tony,YETGİN Sevgi,YARALI HÜSNİYE NEŞE,Dursun Ali,gürsel türkiz,ÇETIN MUALLA Transcobalamin II Deficiency in Four Cases with Novel Mutations. , 2015, ss.317 - 322.
AMA ÜNAL CANGÜL Ş,RUPAR T,YETGİN S,YARALI H,Dursun A,gürsel t,ÇETIN M Transcobalamin II Deficiency in Four Cases with Novel Mutations. . 2015; 317 - 322.
Vancouver ÜNAL CANGÜL Ş,RUPAR T,YETGİN S,YARALI H,Dursun A,gürsel t,ÇETIN M Transcobalamin II Deficiency in Four Cases with Novel Mutations. . 2015; 317 - 322.
IEEE ÜNAL CANGÜL Ş,RUPAR T,YETGİN S,YARALI H,Dursun A,gürsel t,ÇETIN M "Transcobalamin II Deficiency in Four Cases with Novel Mutations." , ss.317 - 322, 2015.
ISNAD ÜNAL CANGÜL, Şule vd. "Transcobalamin II Deficiency in Four Cases with Novel Mutations". (2015), 317-322.
APA ÜNAL CANGÜL Ş, RUPAR T, YETGİN S, YARALI H, Dursun A, gürsel t, ÇETIN M (2015). Transcobalamin II Deficiency in Four Cases with Novel Mutations. Turkish Journal of Hematology, 32(4), 317 - 322.
Chicago ÜNAL CANGÜL Şule,RUPAR Tony,YETGİN Sevgi,YARALI HÜSNİYE NEŞE,Dursun Ali,gürsel türkiz,ÇETIN MUALLA Transcobalamin II Deficiency in Four Cases with Novel Mutations. Turkish Journal of Hematology 32, no.4 (2015): 317 - 322.
MLA ÜNAL CANGÜL Şule,RUPAR Tony,YETGİN Sevgi,YARALI HÜSNİYE NEŞE,Dursun Ali,gürsel türkiz,ÇETIN MUALLA Transcobalamin II Deficiency in Four Cases with Novel Mutations. Turkish Journal of Hematology, vol.32, no.4, 2015, ss.317 - 322.
AMA ÜNAL CANGÜL Ş,RUPAR T,YETGİN S,YARALI H,Dursun A,gürsel t,ÇETIN M Transcobalamin II Deficiency in Four Cases with Novel Mutations. Turkish Journal of Hematology. 2015; 32(4): 317 - 322.
Vancouver ÜNAL CANGÜL Ş,RUPAR T,YETGİN S,YARALI H,Dursun A,gürsel t,ÇETIN M Transcobalamin II Deficiency in Four Cases with Novel Mutations. Turkish Journal of Hematology. 2015; 32(4): 317 - 322.
IEEE ÜNAL CANGÜL Ş,RUPAR T,YETGİN S,YARALI H,Dursun A,gürsel t,ÇETIN M "Transcobalamin II Deficiency in Four Cases with Novel Mutations." Turkish Journal of Hematology, 32, ss.317 - 322, 2015.
ISNAD ÜNAL CANGÜL, Şule vd. "Transcobalamin II Deficiency in Four Cases with Novel Mutations". Turkish Journal of Hematology 32/4 (2015), 317-322.