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Steve,
Vidaza can have that kind of an impact on blood counts with only two cycles complete. There have been a few studies that suggest that an early platelet response where the platelets at least double in the first couple of cycles is a good indicator that the treatment will be effective.
Normally doctors will continue administering Vidaza until a best response is achieved or even longer - I have seen studies that suggest that best response could come along as late as 11 cycles in some patients.
As you probably already know, in the absence of disease progression, Vidaza is recommended for a minimum of 4-6 cycles to obtain best response.
It is really good to see your father responding well.
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MDS RCMD w/grade 2-3 fibrosis. Allo-MUD Feb 26, 2014. Relapsed August 2014. Free and clear of MDS since November 2014 after treatment with Vidaza and Rituxan. Experiencing autoimmune attack on CNS thought to be GVHD, some gut, skin and ocular cGVHD. Neuropathy over 80% of body.
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