This phase II/III trial studies the best approach in improving quality of life and survival after a donor stem cell transplant in older, weak, or frail patients with blood diseases. Patients who have undergone a transplant often experience increases in disease and death. One approach, supportive and palliative care (SPC), focuses on relieving symptoms of stress from serious illness and care through physical, cultural, psychological, social, spiritual, and ethical aspects. While a second approach, clinical management of comorbidities (CMC) focuses on managing multiple diseases, other than cancer, such as heart or lung diseases through physical exercise, strength training, stress reduction, medication management, dietary recommendations, and education. Giving SPC, CMC, or a combination of both may work better in improving quality of life and survival after a donor stem cell transplant compared to standard of care in patients with blood diseases.

The goal of this clinical study is to learn more about the long-term safety, effectiveness
and prolonged action of Kite study drugs, axicabtagene ciloleucel, brexucabtagene autoleucel,
KITE-222, KITE-363, KITE-439, KITE-585, and KITE-718, in participants of Kite-sponsored
interventional studies.

This phase I/II trial tests the safety, side effects, and best dose of decitabine and cedazuridine (ASTX727) in combination with itacitinib and how well they work in treating patients with myelodysplastic/ myeloproliferative neoplasm. Cedazuridine is in a class of medications called cytidine deaminase inhibitors. It prevents the breakdown of decitabine, making it more available in the body so that decitabine will have a greater effect. Decitabine is in a class of medications called hypomethylation agents. It works by helping the bone marrow produce normal blood cells and by killing abnormal cells in the bone marrow. Itacitinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving decitabine and cedazuridine in combination with itacitinib may work better in treating patients with myelodysplastic/myeloproliferative neoplasm.