Background: Myelodysplastic syndrome (MDS) and myelodysplastic/myeloproliferative neoplasm (MDS/MPN) are blood disorders that can cause serious complications in children and adults. MDS and MDS/MPN can also progress to acute myeloid leukemia. Treatments for these disorders are risky and not always effective. Better treatments are needed.

Summary: This phase I trial tests the safety and side effects of pacritinib in combination with a Bruton's tyrosine kinase (BTK) inhibitor and how well it works in treating patients with mantle cell lymphoma that has come back after a period of improvement (relapsed) or that has not responded to previous treatment (refractory). Pacritinib may stop the growth of tumor cells by blocking some of the enzymes n...

Background: Chronic graft-versus-host disease (cGVHD) is an immune system disorder that can occur in people who have had a stem cell transplant. cGVHD can affect multiple organs and increase risk of disability and death. New treatments are needed to treat cGVHD after stem cell transplant.