The lack of genotyping in previous studies constituted an important limitation, given that several highly prevalent pathological gene variants in PD (such as in the GBA1 gene) are linked to more severe phenotypes, including higher cognitive impairment or dementia (all pathogenic variants and the distribution of GBA1 carriers among the groups in our study before exclusion were appended in Supplementary material) (Pachchek et al., 2023). The gene discussed is GBA1; the disease is Cognitive impairment.