personalis inc on friday jumped after it said it signed a new agreement with moderna inc to develop the biotechnology companys cancer vaccine at 1228 et shares were up 27 at 387 the cancer genomics company said the agreement would allow moderna to use its next platform to evaluate the investigational personalized cancer vaccine mrna4157v940 the platform would be used to sequence genomic information from a patients tumor sample to identify the unique genetic mutations that are most likely to generate a tailored antitumor response the company said moderna and merck  co are jointly developing the cancer vaccine