2024, Number 6
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Med Int Mex 2024; 40 (6)
Medullary deficiency aplasia due to hereditary pernicious anemia
Vargas NLP, Estrada MJP; Vargas OM, Medina RGJ
Language: Spanish
References: 26
Page: 388-394
PDF size: 244.84 Kb.
ABSTRACT
Background: Vitamin B
12 and both of its active forms, cyanocobalamin and
hydroxycobalamin are essential micronutrients for cellular metabolism and division.
Vitamin B
12 is mostly obtained from animal-derived proteins, and its deficiency
generates a systemic compromise with mainly neurologic and hematologic signs
and symptoms.
Clinical case: A 47-year-old male patient with positive family history for pernicious
anemia and several other autoimmune affections presented to the Emergency
department with medullary aplasia due to vitamin B
12 deficiency. Diagnostic studies
showed low levels of vitamin B
12, a conclusive biopsy and positive anti-parietal cell
antibodies confirmed pernicious anemia. Patient’s symptoms were relieved with vitamin
B12 supplementation.
Conclusions: A genetic panel testing for AMN, CUBN, GIF, and holocortine mutations
–all related to the vitamin B
12 metabolic pathway–, as well as for the HLA-DRB1*03
and DRB1*04 haplotypes is suggested in young patients presenting with pernicious
anemia and positive family history.
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