T-type acute lymphoblastic leukemia (T-ALL) is a rare but serious blood cancer that affects children and young adults under the age of 30. At the Hôpital Necker – Enfants malades, researchers are analyzing the genetic abnormalities of this disease in order to propose targeted therapies tailored to each patient. Find out how Prof. Asnafi and his team are fighting to improve the survival of young patients affected by LAL-T leukemia.