Zhang, Ling Yan, Smith, Matthew L., Schultheis, Beate, Fitzgibbon, Jude, Lister, T. Andrew, Melo, Junia V., Cross, Nicholas C.P. and Cavenagh, Jamie D.
A novel K509I mutation of KIT identified in familial mastocytosis-in vitro and in vivo responsiveness to imatinib therapy
Leukemia Research, 30, (4), . (doi:10.1016/j.leukres.2005.08.015).
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KIT mutation has been implicated in sporadic mastocytosis, yet clusters in only a few sites in the molecule. For those malignancies associated with KIT mutation or over-expression, imatinib offers a specific therapeutic option, yet it has no effect on D816V mutation commonly seen in sporadic mastocytosis. The majority of cases of familial mastocytosis seem to lack KIT mutation. We report a kindred with mastocytosis in whom in vitro and in vivo sensitivity to imatinib was demonstrated. Mutation analysis of the KIT coding region in this family identified a novel A>T mutation at nucleotide 1547 [K509I] in exon 9 in both of the affected patients.
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