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. 2008 Jun 15;68(12):4531-40.
doi: 10.1158/0008-5472.CAN-07-5661.

Underexpression of RhoH in Hairy Cell Leukemia

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Underexpression of RhoH in Hairy Cell Leukemia

Sylvie Galiègue-Zouitina et al. Cancer Res. .
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The cause of hairy cell leukemia (HCL) is unknown. Current treatments seem effective only for a limited period of time. In addition, a significant proportion of patients remain refractive to all treatment options. These considerations indicate the need to develop alternative therapeutic strategies for HCL. Here, we report that HCL is characterized by underexpression of RhoH. In vitro reconstitution of RhoH expression inhibits the aberrant adhesion and transendothelial migration that drives disease pathogenesis. In an in vivo model of HCL, RhoH reconstitution limits malignant progression and protects against mortality. These findings provide the proof of principle that RhoH reconstitution represents a potential new approach to the treatment of HCL.

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