ACSS2 and alpha thalassemia spectrum: Age of ‐‐SEA/αα was lower than that of ‐α3.7/αα and ‐α4.2/αα (p < 0.05) Among the non‐deletional genotypes of α‐thalassemia, patients with αQSα/αα were found to have higher RBC and HbA2 and lower MCV and MCH than patients with αCSα/αα (p < 0.05).