1. Medicament for treating and / or preventing cancer comprising a combination of an antibody or fragment thereof having immunological reactivity with a CAPRIN-1 protein, and one or two or more types of antitumor agents, wherein the antibody or fragment thereof and an antitumor agent or antitumor agents instead of, or combined use of otdelnosti.2. Medicament according to claim 1, wherein the antibody or fragment thereof having immunological reactivity with a CAPRIN-1 protein is an antibody or fragment thereof that specifically binds to the extracellular region of the protein CAPRIN-1 malignant kletki.3 existing on the surface . Medicament according to claim 1, wherein the antibody or fragment thereof having immunological reactivity with a CAPRIN-1 protein is an antibody or fragment thereof that specifically binds to a polypeptide having the amino acid sequence shown as SEQ ID NO: 37 , in the extracellular region of CAPRIN-1 protein existing on the surface of malignant cells or an amino acid sequence having 80% or higher identity with the amino acid sequence Representat sequence as claimed in SEQ ID NO: 37.4. Medicament according to claim 1, wherein the CAPRIN-1 protein is a protein cheloveka.5. Medicament according to claim 1, wherein the above-mentioned antitumor agent is any of the anticancer agents described in opisanii.6. Medicament according to claim 5, wherein the antineoplastic agent is selected from the group consisting of cyclophosphamide, paklitakse1. Лекарственный препарат для лечения и/или профилактики рака, включающий в себя сочетание антитела или его фрагмента, обладающего иммунологической реактивностью по отношению к белку CAPRIN-1, и одного или двух или больше типов противоопухолевых средств, при этом антитело или фрагмент и противоопухолевое средство или противоопухолевые средства объединяют вместо или используют по отдельности.2. Лекарственный препарат по п.1, в котором антитело или его фрагмент, обладающий иммунологической реактивностью по отношен
