1. A pharmaceutical composition for the treatment and / or prevention of a cancer, comprising an antibody or fragment thereof as an active ingredient which has immunological reactivity with an incomplete polypeptide of CAPRIN-1, CAPRIN-1 that is represented by any of the numbered with even numbers of sequences SEQ ID NO : 2-30, and wherein the polypeptide comprises an amino acid partial sequence shown as SEQ ID NO: 37 or an amino acid sequence having 80% or higher sequence identity with am inokislotnoy sequence of SEQ ID NO: 37.2. A pharmaceutical composition for the treatment and / or prevention of a cancer, comprising an antibody or fragment thereof as an active ingredient which has immunological reactivity with an incomplete polypeptide of CAPRIN-1, while CAPRIN-1 is represented by any of the numbered with even numbers of sequences SEQ ID NO: 2 -30, and thus an incomplete polypeptide comprises an amino acid sequence shown as SEQ ID NO: 69 or 70 that is part of the amino acid sequence shown as SEQ ID NO: 37 or an amino acid th sequence having 80% or higher sequence identity with the amino acid sequence of SEQ ID NO: 69 or 70.3. A pharmaceutical composition according to claim 1, wherein the cancer is breast cancer, brain tumor, leukemia, lymphoma, lung cancer, mastocytoma, renal cancer, cervical cancer, bladder cancer, esophageal cancer, gastric cancer or colorectal cancer .4. A pharmaceutical composition according to claim 1, wherein the antibody is a monoclonal or polyclonal antibody1. Фармацевтическая композиция для лечения и/или профилактики рака, содержащая антитело или его фрагмент в качестве активного ингредиента, которое обладает иммунологической реактивностью по отношению к неполному полипептиду CAPRIN-1, при этом CAPRIN-1 представлен любой из пронумерованных четными числами последовательностей SEQ ID NO: 2-30, и при этом неполный полипептид содержит аминокислотную последовательность, представленную в виде SEQ ID NO: 37, или аминокислотную последовательнос
