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Letters to the Editor
sequencing and performed variant interpretation; VM-E, FB, JD and CB-C analyzed the data and wrote the manuscript which was reviewed and edited by all authors.
Acknowledgments: the authors would like to thank the families involved in the study. They thank the IPSIT “Ingénierie et Plateformes au Service de l’Innovation Thérapeutique” Laboratory and, especially, Mrs M.-L. Aknin for her support with flow-cytometry analysis (PLAIMMO platform).
Funding: the French Severe Chronic Neutropenia Registry is sup- ported by grants from X4 Pharma, Prolong Pharma and Chugai SA (B. Beaupain, J. Donadieu). This work was also funded by the Association Laurette Fugain and the CEREDIH.
Data-sharing statement: technical information is available on request in order to assist other laboratories with characterization of CXCR2 variants.
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