Hb Heathrow β103(G5)Phe→Leu, a First Report in an Asian Patient with Erythrocytosis
Yonsei Medical Journal
;
: 665-667, 2017.
Artigo
em Inglês
| WPRIM
| ID: wpr-28762
ABSTRACT
Congenital erythrocytosis (CE) is a rare and heterogeneous disease. The high oxygen affinity hemoglobin (Hb) variants are the most common cause of CE. Herein, we report a Korean patient with isolated erythrocytosis. A 25-year-old man was referred to our hospital for evaluation of high Hb level (Hb 20.4 g/dL, hematocrit 58%, reticulocyte count 2.90%, white blood cell count 6.83×10⁹/L, and platelet count 195×10⁹/L). Bone marrow biopsy revealed normocellular marrow without myeloproliferative features. JAK2 (V617F, exon 12), CALR (exon 9), and MPL W515K/L mutations were not detected. P₅₀ (partial pressure at which Hb is half saturated with oxygen), which is an indicator of left-shift of oxygen dissociation curve (high oxygen affinity state), was 14.3 mm Hg (reference value 22.6–29.4 mm Hg). He was suspected to have CE. Mutation analysis of the HBB gene revealed the known Hb variant, Hb Heathrow [β103(G5)Phe→Leu]. This is the first report of Hb Heathrow in Asian.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Oxigênio
/
Contagem de Plaquetas
/
Policitemia
/
Biópsia
/
Medula Óssea
/
Éxons
/
Contagem de Reticulócitos
/
Povo Asiático
/
Hematócrito
/
Contagem de Leucócitos
Limite:
Adulto
/
Humanos
Idioma:
Inglês
Revista:
Yonsei Medical Journal
Ano de publicação:
2017
Tipo de documento:
Artigo
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