PREDICTION OF RISK OF DEVELOPMENT OF UNDESIRED REACTION RELATED TO ADMINISTRATION OF ANTIBODY TO ALK2 AND CAPABILITY OF RESPONDING TO TREATMENT WITH ANTIBODY TO ALK2 Russian patent published in 2022 - IPC G01N33/68 C12Q1/6827 A61K39/395 C07K16/40 A61P43/00 A61P35/00 

FIELD: medicine.

SUBSTANCE: group of inventions relates to prediction of the risk of development of an undesired reaction related to administration of an antibody to ALK2, prediction of a response to treatment or prevention by administration of an antibody to ALK2, to a method for selection of a subject undergoing treatment or prevention by administration of an antibody to ALK2, and a method for treatment or prevention of ectopic ossification or brain tumor caused by BMP signal transmission mediated with ALK2 containing active mutation by administration of an antibody to ALK2. Methods include detection of the presence or absence of active mutation in ALK2 and mutation of an amino acid residue in position 330 of ALK in the patient. Then, it is determined that, when the patient has active mutation in ALK2 and does not have mutation of the amino acid residue in position 330 of ALK2, he/she is capable of responding to treatment or prevention by administration of the antibody to ALK2 or its antigen-binding fragment.

EFFECT: inventions allow for effective treatment or prevention of ectopic ossification or brain tumor by administration of an antibody to ALK2.

12 cl, 8 dwg, 8 ex