[Reference guide for adult chronic neutropenia]

Area of Science:

• Hematology
• Internal Medicine

Background:

• Chronic neutropenia is a rare hematological disorder.
• Diagnostic criteria and classification are less defined in adults than children.

Purpose of the Study:

• To propose a Reference Guide for Adult Chronic Neutropenia.
• To establish clear diagnostic and classification criteria for adult chronic neutropenia.

Main Methods:

• Diagnosis defined by absolute neutrophil count (ANC) <1,500/µl for over three months.
• Severity classified as severe (ANC <500/µl), moderate (500–1,000/µl), and mild (1,000–1,500/µl).
• Classification includes autoimmune, cyclic, T cell clone, and idiopathic neutropenia types.

Main Results:

• The guide provides diagnostic criteria for adult chronic neutropenia.
• It classifies adult chronic neutropenia into distinct types with described characteristics.
• First-line treatments include antibiotics and G-CSFs for infections.

Conclusions:

• The Reference Guide for Adult Chronic Neutropenia offers standardized diagnostic and classification criteria.
• It aids in understanding and managing this rare hematological condition in adults.
• Treatment strategies involve G-CSFs and antibiotics, with prophylactic use in select severe cases.