If it were me, and it was too late to turn things around with cyclosporine alone, I would repeat the ATG with cyclosporine but extend the cyclosporine to 6 - 12 months before beginning a very very slow taper. This is assuming your counts rebound quickly again.
I would only consider the BMT if this approach failed.
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55 yo female, dx 9/08, AA/hypo-MDS, subclinical PNH, ATG/CsA 12/08, partial response. small trisomy 6 clone, low-dose cyclosporine dependent
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