{{Rsnum
|rsid=28930977
|Gene=PSEN1
|Orientation=plus
|ReferenceAllele=C
|MissenseAllele=A
|geno1=(A;A)
|geno2=(A;C)
|geno3=(C;C)
|Chromosome=14
|position=73219192
|Gene_s=PSEN1
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|Status=Merged
|Merged=121917808
}}Variations in this snp are related to ALZHEIMER DISEASE, FAMILIAL, 3 [http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=607822 Omim 607822]. Dementia, SPASTIC PARAPARESIS, APRAXIA,