| Geno | Mag | Summary | 
| (C;C) | 0 | normal/common in clinvar | 
| (C;T) | 2.2 | reduced risk (0.84x) for late-onset (adult) asthma | 
| (T;T) | 2.8 | reduced risk (0.73) for late-onset (adult) asthma | 
 
|   |  | 
rs1837253 is a SNP found a bit upstream of the thymic stromal lymphopoietin TSLP gene on chromosome 5. The TSLP protein plays a role in inflammation of cells in the trachea and alveoli therefore may have a causative role in certain types of asthma. 
The rs1837253(T) allele has been found to reduce the risk of developing late-onset (adult) asthma in several studies, and it is recognized by the CPMC Study as one they report to their participants.
| GWAS snp | 
| PMID | [PMID 21804548  ] | 
| Trait |  | 
| Title | Genome-wide association study identifies three new susceptibility loci for adult asthma in the Japanese population. | 
| Risk Allele | C | 
| P-val | 1E-16 | 
| Odds Ratio | 1.1700 [1.13-1.22] | 
| GWAS snp | 
| PMID | [PMID 21804549  ] | 
| Trait |  | 
| Title | Meta-analysis of genome-wide association studies of asthma in ethnically diverse North American populations. | 
| Risk Allele |  | 
| P-val | 1E-14 | 
| Odds Ratio | None None | 
[PMID 19539984] A thymic stromal lymphopoietin gene variant is associated with asthma and airway hyperresponsiveness.
[PMID 20560908 ] TSLP polymorphisms are associated with asthma in a sex-specific fashion.
] TSLP polymorphisms are associated with asthma in a sex-specific fashion.
[PMID 21244681 ] Thymic stromal lymphopoietin (TSLP) is associated with allergic rhinitis in children with asthma.
] Thymic stromal lymphopoietin (TSLP) is associated with allergic rhinitis in children with asthma.
| GWAS snp | 
| PMID | [PMID 24388013  ] | 
| Trait | Asthma and hay fever | 
| Title | Genome-wide association analysis identifies 11 risk variants associated with the asthma with hay fever phenotype. | 
| Risk Allele | C | 
| P-val | 1E-9 | 
| Odds Ratio | 1.17 [1.12-1.24] | 
[PMID 25700684] Association Between TSLP Polymorphisms and Eczema in Japanese Women: the Kyushu Okinawa Maternal and Child Health Study