45 Van Bilsen Van Bilsen K K Driessen Driessen GJ GJ de Paus de Paus RA RA van de Vosse van de Vosse E E van Lom van Lom K K van Zelm van Zelm MC MC Low level IGF-1 and common variable immune deficiency: an unusual combination Low level IGF-1 and common variable immune deficiency: an unusual combination Neth J Med. This evidence concerns the gene IGF1 and Immunodeficiency.