Hospital Universitario. Dr. José Eleuterio González

This phase 2 single-arm study aims to demonstrate the efficacy of strong cytochrome inhibition with ketoconazole to reduce dasatinib dosage for adults with chronic myelogenous leukemia. Researchers will describe response rates and adverse events.

Multiple conditioning regimens have been used for the HSCT, some of which include radiotherapy. Total body irradiation (TBI) has demonstrated to be superior to chemotherapy alone in the phase III FORUM trial. However, concerns for long-term toxicity have made TBI less used. Total marrow and lymphoid irradiation (TMLI) has emerged as a new alternative that can potentially keep the benefits of radiation but reducing toxicity to healthy tissues.
The primary objective of this trial is to evaluate the feasibility and safety of TMLI as part of conditioning schemes with or without etoposide for HSCT in patients between age 16 and 45 years with ALL in first line or relapsed disease. As secondary endpoint the efficacy will be assessed by minimal residual disease at 60 days post-transplant, as well as other outcome measures such as non-relapse mortality (NRM), relapse free survival (RFS) and overall survival (OS).

Chronic GVHD (cGVHD) is a predominant cause of mortality and disability not related to relapse; it occurs in 30 to 70% of patients. The majority of patients with cGVHD present with ocular involvement with a reported incidence of 40-60%. Symptoms can range from mild dry eye syndrome to severe epithelial defects that can generate corneal perforation and loss of vision. The most accepted pharmacological modality is the topical application of cyclosporine A; on the other hand, tacrolimus has shown greater immunosuppressive power when used in ocular GVHD. However, this effectiveness is limited since by the time the manifestations appear, there is already permanent damage to the lacrimal gland due to the lymphocytic infiltration; so it is necessary to use a prevention strategy before these manifestations appear. Previously, the employment of ocular cyclosporine drops as ocular GVHD prophylaxis was assessed to evaluate safety and effectiveness, showing that it is well tolerated and can limit the appearance of severe dry eye manifestations in a small group of patients. The purpose of this work is to compare the two modalities currently accepted for the treatment of the disease, but in a prophylactic way; topical ciclosporin A against topical tacrolimus, to determine the safety and efficiency of each of them as a preventive measure to limit the risk of developing the appearance of ocular cGVHD and the permanent consequences that this generates.