SLC22A5 and medium chain acyl-CoA dehydrogenase deficiency: Further studies specifically on the pathogenic variants c.83G > T in the SLC22A5 gene associated with primary carnitine deficiency and c.350C > T in the ACADM gene associated with MCAD in Qatar would be beneficial to comprehensively understand their role and frequencies in the population and to investigate the potential to include them in premarital screening.