{{Rsnum
|rsid=149391396
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Chromosome=9
|Orientation=plus
|Gene=SARDH
|position=133671694
|Gene_s=SARDH
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
}}[[rs149391396]], also known as R723X, is a variant in the sarcosine dehydrogenase [[SARDH]] gene that has been reported to cause [[sarcosinemia]], a condition brought about through autosomal recessive inheritance.{{PMID|22825317}}

In dbSNP orientation for this SNP, the variant (rare) allele is [[rs149391396]](A).{{ClinVar
|ALT=A
|CHROM=9
|CLNACC=RCV000032645.1
|CLNALLE=1
|CLNDBN=Sarcosine dehydrogenase deficiency
|CLNDSDB=MedGen:OMIM:Orphanet:SNOMED_CT
|CLNDSDBID=C0268563:268900:3129:64852002
|CLNHGVS=NC_000009.11:g.136536816G>A
|CLNSIG=5
|CLNSRC=OMIM Allelic Variant
|CLNSRCID=604455.0003
|Disease=Sarcosine dehydrogenase deficiency
|FwdALT=A
|FwdREF=G
|GENEINFO=SARDH:1757
|GENE_ID=1757
|GENE_NAME=SARDH
|REF=G
|RSPOS=136536816
|Reversed=0
|SAO=0
|SSR=0
|Tags=PM;S3D;OTHERKG;LSD;OM
|VC=SNV
|VP=0x050260000000000002110100
|WGT=0
|dbSNPBuildID=134
|rsid=149391396
}}