The secondary objectives are: to evaluate the efficacy of the study therapy in terms of progression free survival (PFS) and overall survival (OS); to assess the response in terms of overall response rate (ORR) (complete response (CR), partial response (PR), stable disease (SD), progressive disease (PD)); to assess duration of response (DoR); to assess the safety in terms of incidence, type, and severity of adverse events (AEs) and serious adverse events (SAEs) ;to measure the effects of skin disease on quality of life (QoL) of patients under therapy (Skindex-16)