American journal of hematology 2019-03
Neutropenia in the age of genetic testing: Advances and challenges.   
Identification of genetic causes of neutropenia informs precision medicine approaches to medical management and treatment. Accurate diagnosis of genetic neutropenia disorders informs treatment options, enables risk stratification, cancer surveillance, and attention to associated medical complications. The rapidly expanding genetic testing options for the evaluation of neutropenia have led to exciting advances but also new challenges. This review provides a practical guide to germline genetic testing for neutropenia.

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What are indications to order gene mutation studies (e.g. ELANE) and how would it help the patient?