Study Purpose: This study is looking at a special medicine called GM-CSF. It is used with another treatment called post-transplant cyclophosphamide to help people who get a special type of transplant called a haploidentical stem cell transplant. This transplant can help treat blood-related diseases, but it can also make people get sick from infections. The study wants to see if using GM-CSF can help people get better faster without getting sick as often.

Eligibility: To join, you need a certain type of donor match, and your health must be strong enough (KPS score of 70% or more). You can't join if you have certain health problems, like poor heart or lung function, or if you are allergic to GM-CSF.

• Duration: The study involves multiple visits post-transplant for monitoring recovery.
• Risks: Possible allergic reactions to GM-CSF, and infection risks due to transplant.
• Compensation: Information about compensation is not provided in the summary.