Although I've heard that testing positive for HLA-DR15 increases the probability of responding to ATG, it is not definitive.
I tested negative for HLA-DR15 but still responded to ATG.
Good Luck!
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58 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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