It refers to a single antibody, specifically combined with PD-1, or a polymer of PD-1, including: (a) a HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 and LCDR3, respectively, which contain amino acid sequences with SEC No. 2, 145, 4, 5, 6 and 7; (b) a variable heavy chain region (VH) with ID No. 140 and a region. We have a light chain variable of 16; and (c) we have a heavy chain (HC) of 150 and a light chain (LC) of 28. He also mentioned a pharmacological synthesis, including antibodies, that is useful in the treatment of immune disorders.SE REFIERE A UN ANTICUERPO AISLADO QUE SE UNE ESPECIFICAMENTE A PD-1 O UN FRAGMENTO DE UNION AL ANTIGENO DE ESTE, QUE COMPRENDE: a) UNA HCDR1, HCDR2, HCDR3, LCDR1, LCDR2 Y LCDR3 QUE COMPRENDE LAS SECUENCIAS DE AMINOACIDOS DE SEC ID NO: 2, 145, 4, 5, 6 Y 7, RESPECTIVAMENTE; b) UNA REGION VARIABLE DE CADENA PESADA (VH) DE SEC ID NO: 140 Y UNA REGION VARIABLE DE CADENA LIGERA (VL) DE SEC ID NO: 16; Y c) UNA CADENA PESADA (HC) DE SEC ID NO: 150 Y UNA CADENA LIGERA (LC) DE SEC ID NO: 28. TAMBIEN SE REFIERE A UNA COMPOSICION FARMACEUTICA QUE COMPRENDE DICHO ANTICUERPO, QUE ES UTIL EN EL TRATAMIENTO DE TRASTORNOS INMUNITARIOS