Jong-Jin Seo

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We conducted a case-control study to evaluate the association between paternal smoking and childhood leukemia and to evaluate potential modification by polymorphisms in CYP1A1. Histologically confirmed childhood leukemia cases (n=164) and non-cancer controls (n=164) were recruited from three teaching hospitals in Seoul, Korea. Five single nucleotide(More)
Data regarding the prognostic significance of CXCR4 and VLA-4 in ALL are limited. Especially, VLA-4 has not been evaluated at the time of diagnosis in both adult and childhood ALL patients. We prospectively analyzed the expression of VLA-4 and CXCR4 in 54 patients (VLA-4 in 29 adults and 25 children and CXCR4 in 22 adults and 24 children) newly diagnosed(More)
BACKGROUND Hemophagocytic lymphohistiocytosis (HLH) is a rare multisystem disorder that frequently involves the central nervous system (CNS). We compared the clinical characteristics, treatment, and prognosis of patients with HLH according to the degree of CNS involvement. METHODS The clinical manifestations, initial laboratory data, treatment, and(More)
Dear Editor, Severe congenital neutropenia (SCN) is a genetically heterogeneous disorder characterized by persistent agranulocytosis (<0.2×10 per liter) with promyelocytic maturation arrest in the bone marrow and recurrent infection. It is caused by a heterozygous mutation in the ELA2 gene encoding the human neutrophil elastase (NE) [1]. In this report, we(More)
Leukemic stem cells (LSCs) are root of clonal growth in acute myeloid leukemia (AML) and responsible for the propagation of leukemic blasts (LBs). LSCs are considered as CD34 + CD38− population among LBs and often express as CD123, CD44, or CD184, which are rarely expressed on normal hematopoietic stem cells and could be the potential therapeutic targets.(More)
Congenital amegakaryocytic thrombocytopenia (CAMT) is a rare autosomal recessive disorder characterized by thrombocytopenia from failure of megakaryopoiesis. CAMT is one of the bone marrow failure syndromes, and the disease progression may involve other lineages leading to pancytopenia. The genetic background of CAMT is mutations in the MPL gene encoding(More)
Dear Editor, Refractory cytopenia of childhood (RCC) is the most common subtype of hypoplastic myelodysplastic syndrome (hMDS) in childhood, characterized by persistent cytopenia, dysplastic changes in erythroid precursors or megakaryocytes, and the presence of erythroid islands, defined as more than 10 erythroid precursors in a bone marrow (BM) biopsy(More)
Neuroblastoma is one of the most common solid tumors occurring in childhood. Bone marrow evaluation is an important part of clinical staging in neuroblastoma patients. In view of the difficulty of detecting neuroblastoma cells with conventional bone marrow aspirate smears and biopsy (BMB) and specimens in cases in which metastasis is not prominent, we(More)