This paper presents the extension of a service-oriented architecture framework for precision oncology to the management of patient generated health data from wearables. The solution follows the indication provided by the Health Level 7 (HL7) and Object Management Group (OMG) initiative Healthcare Service Specification Project (HSSP) and is compliant to Retrieve Locate and Update Service (RLUS) Release 1 standard adopting Clinical Document Architecture Release 2 (CDA R2) as semantic signifier. The system which has been developed supports the management of visits, the setting up of a clinical diary and a comprehensive view of the patients from the wearables data for improve clinical care and for research. The system structure is highly modular and the parameters relating to wearables data are only present in one module. Extension of the systems to other aspects, such as genomics and immune therapy, are planned following the same modular design criteria.