Bernasconi Bernasconi A A Marino Marino R R Ribas Ribas A A Characterization of immunodeficiency in a patient with growth hormone insensitivity secondary to a novel STAT5b gene mutation Characterization of immunodeficiency in a patient with growth hormone insensitivity secondary to a novel STAT5b gene mutation Pediatrics Pediatrics 2006 2006 118 118 e1584 e1584 92 92 10.1542/peds.2005-2882 10.1542/peds.2005-2882 17030597 17030597. The gene discussed is STAT5B; the disease is immune system disorder.