Among them, HBA2 c.272_279delAGCTTCGG was first reported in Guangxi Zhuang Autonomous Region, China, and the phenotype of HBA2 c.272_279delAGCTTCGG heterozygote was speculated to be similar to -α3.7/αα, showing static thalassemia (Li et al., 2019). Here, HBA2 is linked to thalassemia.