Synonyms: Neutrophil-specific granule deficiency
A rare functional neutrophil defect characterized by infantile onset of increased susceptibility to pyogenic infections especially of the skin ears lung and lymph nodes with neutrophils lacking specific granules and exhibiting bilobed nuclei on peripheral blood smear. Bone marrow biopsy shows hypercellularity paucity of neutrophil granulocytes and progressive myelodysplasia. Additional manifestations may include mild to moderate developmental delay mild facial dysmorphic features (such as dysplastic ears) and anomalies of bones teeth and nails.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version May 2026
Newly diagnosed with
Recurrent infection due to specific granule deficiency?
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Advocacy Organizations
Immune Deficiency Foundation
To improve the diagnosis, treatment and quality of life of people affected by primary immunodeficiency.
Immunocompromised Association
Immunocompromised Association promotes awareness, education, and support for immunocompromised individuals to reduce their inherent health risks in the community.
No somos invisibles IDP – Perú
“No Somos Invisibles IDP Peru” is an initiative currently in the process of formal establishment that seeks to raise awareness of primary immunodeficiencies, promote timely access to diagnosis and treatment, and defend patients’ rights by fostering an informed, empathetic, and well-coordinated support network. Building visibility, access, and justice for every patient.
The AIP BIPOC Network
Our mission is to improve the quality of life of the BIPOC Autoimmune Community through Awareness, Advocacy, Action, Assessment and Access.
Ukrainian Association of Pediatric Immunology
Development of pediatric and clinical immunology in Ukraine. Raising awareness of inborn errors of immunity in Ukraine and rare immune diseases; Advocacy campaigns supporting patients with rare immune diseases and their treatment plans; Scientific research; Sharing knowledge about immunoprophylaxis; Advocacy campaigns supporting immunoprophylaxis.
accessia health
Accessia Health, a national charitable patient assistance organization, is dedicated to eliminating healthcare barriers for people with rare or chronic health conditions. Comprehensive services include personalized case management, financial assistance, education, and legal aid support. Our flexible funding model goes beyond copays, allowing individuals to pay for other essential medical expenses
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Clinical Trials
For a list of clinical trials in this disease area, please click here.