Section to complete information about primary and secondary outcomes including. It includes the metric or method of measurement used and, the time point for every outcome.
Primary outcome(s):
1. Thymic Area (Ultrasound measurement of thymus in mm2). Measurement time: At baseline, 16 weeks and 32 weeks if you complete the third cycle.
2. Degree of thymic hypoplasia (Classification of degree of thymic hypoplasia according to scale in light, moderate or severe). Measurement time: At baseline, 16 weeks and 32 weeks if patient receives the third cycle.
Key secondary outcomes:
1. Infections (Number of infections in the period). Measurement time: At baseline, 16 weeks and 32 weeks if you complete the third cycle.
2. Nutritional Status (Body Mass Index-BMI). Measurement time: At baseline, 16 weeks and 32 weeks if you complete the third cycle.
3. Lymphocyte Subpopulations (Percent of Lymphocyte Markers by Flow Cytometry- CD3+/CD4+, CD3+/CD8+, CD19+, CD56+). Measurement time: At baseline, 16 weeks and 32 weeks if you complete the third cycle .
4. Quality of life (PedsQL Version 4.0 in Spanish Quality of Life questionnaire). Measurement time: At baseline, 16 weeks and 32 weeks if you complete the third cycle.
5. Adverse events-AE (Occurrence of some AE (Yes, No), Description of the AE (Name of adverse event),According to available previous information (Unexpected, Expected), According to its localization the expected AE (World Allergy Organization Criterion: local and systemic AE (0= Nonspecific Symptoms, I= Mild systemic reactions, II= Moderate systemic reactions, III= Severe (nonlife-threatening) systemic reactions, IV= Anaphylactic shock)), Duration of the AE (Time between the start and the end of the AE), Graveness of the AE (Serious, No serious), Attitude regarding the treatment in study (Without changes, Dose modification, Temporary interruption, Definitive interruption), Result of the AE (Recovered, Improved, Persists, Sequels), Causality Relationship of the AE (1.Very likely, 2.Likely, 3.Possible, 4.Unlikely, 5.Not related, 6.Not evaluated)). Measurement time: weekly during the first month and, monthly until month 12.