This present invention relates to forms of methyl {4.6-diamino-2-[1-(2-fluorobenzyl)-1H-pyrazolo[3.4-b]pyridino-3-yl]pyrimidino-5-yl}methylcarbamate comprising its Modification I. Modification II. mono-DMSO solvate. sesqui-DMSO solvate and ¼-ethyl acetate solvate.