Distribution of Hemoglobinopathy Disorders in Al-Kharj Province Based on Data from the Premarital Screening and Genetic Counseling Program

<i>Background and Objectives</i>: Hemoglobinopathies are genetic disorders of hemoglobin and are among the most common inherited diseases. The prevalence rates of sickle cell disease and thalassemia in Saudi Arabia are higher than those in other countries in the Middle East. Saudi Arabia has launched many prevention programs such as a premarital screening program, genetic counseling programs, and neonatal screening in order to reduce the incidence of genetic diseases. The former program includes the most common genetic diseases: sickle cell disease and thalassemia. Many studies conducted since the premarital program started have reported a decrease in the prevalence of sickle cell disease and thalassemia. However, all studies focus on large cities, including their subdivisions, but there is a lack of studies on subdivisions specifically. <i>Materials and Methods</i>: The aim of this study was to assess the prevalence, 5-year time trend, and distribution of β-thalassemia and sickle cell traits in Al-Kharj province using the data of the PMSGC program during the period from January 2017 to February 2021. <i>Results</i>: A total of 21,150 individuals were screened, and 508 were diagnosed with sickle cell disease and thalassemia. Also, we showed that thalassemia was more prevalent than sickle cell disease (66% and 34%, respectively), and there was an increase in β-thalassemia and α-thalassemia. <i>Conclusions</i>: Riyadh city's prevalence rate of β-thalassemia was reported as 7 per 1000, while the current study found a prevalence rate of 5.6 per 1000 in Al-Kharj, which suggests a possible increase as a result of population growth in Al-Kharj province as part of Riyadh city. This study recommends further improvement in preventive measures in high-risk regions, as well as enhanced community awareness, to provide the highest rate of reduction for disorders.