FcγRIIa and FcγRIIb mRNA levels in monocytes from patients with ITP before and after treatment. The mRNA levels of FcγRIIa and FcγRIIb, and the FcγRIIa/IIb mRNA ratio on monocytes before treatment and 6 weeks after eltrombopag therapy in 15 ITP responders and 6 nonresponders. Differences before and after treatment were determined by paired Student t tests.