{{Rsnum
|rsid=7171755
|Gene=C15orf60
|Chromosome=15
|position=73558239
|Orientation=plus
|GMAF=0.4853
|Gene_s=C15orf60
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
}}{{ population diversity
| geno1=(A;A)
| geno2=(A;G)
| geno3=(G;G)
| CEU | 16.8 | 58.4 | 24.8
| HCB | 29.2 | 45.3 | 25.5
| JPT | 25.7 | 52.2 | 22.1
| YRI | 19.7 | 52.4 | 27.9
| ASW | 10.5 | 52.6 | 36.8
| CHB | 29.2 | 45.3 | 25.5
| CHD | 30.3 | 45.9 | 23.9
| GIH | 13.9 | 53.5 | 32.7
| LWK | 31.8 | 49.1 | 19.1
| MEX | 27.6 | 39.7 | 32.8
| MKK | 21.9 | 45.8 | 32.3
| TSI | 19.6 | 48.0 | 32.4
| HapMapRevision=28
}}[[rs7171755]] is a SNP near the synaptic cell adhesion glycoprotein-encoding [[NPTN]] gene.

A study of ~1,500 adolescents determined that the [[rs7171755]](A) allele is associated with a slightly thinner left hemisphere cortex and also a slight decrease in verbal and nonverbal [[intelligence]] (IQ). The differences were really quite slight; each copy of the risk allele decreased cortical thickness by 0.7%, and decreased verbal and nonverbal IQ by 1.8 and 1.4 points, respectively. This study awaits independent replication. Also, note that eight SNPs in the [[NPTN]] locus were reported as jointly showing significant association with cortical thickness in addition to [[rs7171755]]: [[rs7176637]], [[rs11854138]], [[rs8028749]], [[rs12185108]], [[rs1564492]], [[rs899981]], [[rs7178269]] and [[rs4075802]].{{doi|10.1038/mp.2013.197}}

{{on chip | 23andMe v1}}
{{on chip | 23andMe v2}}
{{on chip | 23andMe v3}}
{{on chip | 23andMe v4}}
{{on chip | Affy GenomeWide 6}}
{{on chip | FTDNA}}
{{on chip | HumanOmni1Quad}}
{{on chip | Illumina Human 1M}}