MarrowkidzWelcome to the MarrowKidz site! A big thank you to the National Lottery Community Fund - we couldn't have done this without you! Marrowkidz Families 5-11 12-16 17-25 Ask a question Anti-thymocyte globulin (ATG) treatment This factsheet is for young adults who need ATG as part of their treatment for aplastic anaemia. What is anti-thymocyte globulin (ATG) treatment? If you have aplastic anaemia, you might be given a medicine called ATG as part of your treatment. Your immune system works to keep your body safe and protect it against diseases and infections. With aplastic anaemia, your immune system can end up working too hard and begin fighting against your bone marrow inside your bones. This means that the bone marrow doesn’t make enough stem cells, which turn into the blood cells your body needs to keep you healthy. ATG is a medicine made of antibodies that suppress (quieten down) the immune system for a short time. It gives your bone marrow time to heal and start making stem cells again. What’s in this factsheet? This factsheet explains what happens before, during and after ATG treatment. You can view or download the factsheet as a PDF here: Anti-thymocyte globulin (ATG) treatment (age group 17-25) Or order it as a printed booklet here.