Rare Diseases Symptoms Automatic Extraction

MYD88 L265P mutations are correlated with 6q deletion in korean patients with Waldenström macroglobulinemia.

[waldenström macroglobulinemia]

Waldenström macroglobulinemia (WM) is a malignant lymphoplasma-proliferative disorder with IgM monoclonal gammopathy. A recent whole-genome study identified MYD88 L265P as the key mutation in WM. We investigated MYD88 mutations in conjunction with cytogenetic study in 22 consecutive Korean WM patients. Conventional G-banding and interphase fluorescence in situ hybridization (FISH) were performed at regions including 6q21 using bone marrow (BM) aspirates. Sixteen patients were subjected to Sanger sequencing-based MYD88 mutation study. Five patients (28%) showed cytogenetic aberrations in G-banding. The incidence of 6q21 deletion was 17% by conventional G-banding and 37% by FISH. Ten patients (45%) showed cytogenetic aberrations using FISH: 6q deletion in eight (37%) and IGH rearrangement in four (18%). Two patients had both the 6q deletion and IGH rearrangement, and two had only the IGH rearrangement. Eleven patients (69%) presented with the MYD88 L265P mutation. MYD88 mutations were significantly associated with the presence of 6q deletions (P = 0.037). Six patients with the 6q deletion for whom sequencing was possible were found to harbor MYD88 mutations. The MYD88 L265P mutation was also associated with increased lymphocyte burden in BM biopsy. This is the first report of high frequency MYD88 L265P mutations in Korean WM patients.

Diseases presenting "first report" symptom

  • achondroplasia
  • alexander disease
  • aniridia
  • cadasil
  • canavan disease
  • child syndrome
  • cohen syndrome
  • congenital toxoplasmosis
  • cowden syndrome
  • cushing syndrome
  • cutaneous mastocytosis
  • cystinuria
  • dedifferentiated liposarcoma
  • dentinogenesis imperfecta
  • dracunculiasis
  • dystrophic epidermolysis bullosa
  • epidermolysis bullosa simplex
  • erdheim-chester disease
  • esophageal squamous cell carcinoma
  • fabry disease
  • familial mediterranean fever
  • focal myositis
  • harlequin ichthyosis
  • hirschsprung disease
  • hodgkin lymphoma, classical
  • holt-oram syndrome
  • homocystinuria without methylmalonic aciduria
  • inclusion body myositis
  • junctional epidermolysis bullosa
  • kabuki syndrome
  • kindler syndrome
  • krabbe disease
  • lamellar ichthyosis
  • liposarcoma
  • lymphangioleiomyomatosis
  • monosomy 21
  • neonatal adrenoleukodystrophy
  • neuralgic amyotrophy
  • oculocutaneous albinism
  • oligodontia
  • omenn syndrome
  • pendred syndrome
  • pleomorphic liposarcoma
  • primary hyperoxaluria type 1
  • pyomyositis
  • pyruvate dehydrogenase deficiency
  • scrub typhus
  • severe combined immunodeficiency
  • sneddon syndrome
  • triple a syndrome
  • typhoid
  • waldenström macroglobulinemia
  • werner syndrome
  • wiskott-aldrich syndrome
  • x-linked adrenoleukodystrophy
  • zellweger syndrome

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