Haematologica (Nov 2014)

Calreticulin mutations in Chinese with primary myelofibrosis

  • Bing Li,
  • Junqing Xu,
  • Jingya Wang,
  • Robert Peter Gale,
  • Zefeng Xu,
  • Yajuan Cui,
  • Lin Yang,
  • Ruixian Xing,
  • Xiaofei Ai,
  • Tiejun Qin,
  • Yue Zhang,
  • Peihong Zhang,
  • Zhijian Xiao

DOI
https://doi.org/10.3324/haematol.2014.109249
Journal volume & issue
Vol. 99, no. 11

Abstract

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We tested 357 Chinese with primary myelofibrosis for mutations in CALR, JAK2 and MPL. CALR mutations were detected in 76 subjects (21%). There were 24 (32%) type-1 (L367fs*46) and 49 (64%) type-2 (K385fs*47) mutations. Seventy-two of 168 subjects (43%) without a JAK2 or MPL mutation had a CALR mutation. Subjects with a type-2 CALR mutation had lower hemoglobin concentrations (P=0.001), lower WBC counts (P