Eltrombopag for Peripheral Blood Stem Cell Harvest

This study is testing whether eltrombopag — a drug that stimulates the body to produce more platelets (blood clotting cells) — can improve the collection of stem cells from the blood in people with lymphoma preparing for a stem cell transplant. Poor stem cell collection is a common obstacle, and this trial aims to increase the yield. **You may be eligible if...** - You are 18 or older with Hodgkin or non-Hodgkin lymphoma - Your lymphoma is in complete response, partial response, or stable disease after at least 2 cycles of treatment - You are planned for ESHAP chemotherapy with or without a monoclonal antibody (such as rituximab or brentuximab) for stem cell collection - You have East-Asian heritage **You may NOT be eligible if...** - You have a history of blood clots - You have very high baseline platelet counts or documented abnormalities in your bone marrow cells - You have significant liver damage or are currently on hepatitis C treatment with interferon - You are pregnant or breastfeeding - You have another active cancer besides lymphoma Talk to your doctor to see if this trial is right for you.