PMID- 37767676 OWN - NLM STAT- Publisher LR - 20230928 IS - 1735-5249 (Electronic) IS - 1735-1502 (Linking) VI - 22 IP - 4 DP - 2023 Sep 3 TI - Tumor Necrosis Factor-alpha (-308G>A) Gene Polymorphism and Its Association with Asthma and Atopy Status. PG - 337-344 LID - 10.18502/ijaai.v22i4.13606 [doi] AB - Asthma is one of the most prevalent chronic lung diseases that afflict genetically predisposed individuals. Certain cytokine gene polymorphisms have been associated with asthma. Tumor necrosis factor-alpha (TNF-alpha) is a potent inflammatory cytokine that can modulate nonspecific inflammation to influence asthma. This study aimed to define the relationship between the TNF gene polymorphism at position -308 and asthma susceptibility, as well as atopic and non-atopic asthma. Using polymerase chain reaction with sequence-specific primers, we investigated genotype frequencies and alleles of a polymorphic gene coding for TNF-alpha in 86 pediatric patients with asthma and 470 healthy controls of the same race. Seventy-four patients underwent a skin prick test. The homozygous AA variant (-308, rs1800629) was the most common genotype among patients, accounting for 63.3% of all cases. In contrast, homozygous GG (-308) was significantly less prevalent in the patient group compared to the control group. TNF A (-308) allele frequency was 85.5% among asthma patients and 16.6% among healthy controls. The genotype and allele frequencies of TNF (-308 A>G, rs1800629) did not differ between atopic and non-atopic asthma. In conclusion, TNF (-308) AA and AG genotypes are associated with asthma susceptibility in Iranian children, although there was no significant difference in polymorphism between atopic and non-atopic asthma and no difference in asthma severity groups. FAU - Razaghian, Anahita AU - Razaghian A AD - Division of Allergy and Clinical Immunology, Department of Pediatrics, Pediatrics Center of Excellence, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran. anahita.razaghian@gmail.com. FAU - Parvaneh, Nima AU - Parvaneh N AD - Division of Allergy and Clinical Immunology, Department of Pediatrics, Pediatrics Center of Excellence, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran. nparvaneh@razi.tums.ac.ir. FAU - Amirzargar, Ali Akbar AU - Amirzargar AA AD - Molecular Immunology Research Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran AND Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. amirzara@tums.ac.ir. FAU - Gharagozlou, Mohammad AU - Gharagozlou M AD - Division of Allergy and Clinical Immunology, Department of Pediatrics, Pediatrics Center of Excellence, Children's Medical Center Hospital, Tehran University of Medical Sciences, Tehran, Iran. gharagoz@tums.ac.ir. LA - eng PT - Journal Article DEP - 20230903 PL - Iran TA - Iran J Allergy Asthma Immunol JT - Iranian journal of allergy, asthma, and immunology JID - 101146178 SB - IM OTO - NOTNLM OT - Asthma OT - Atopy OT - Gene polymorphism OT - PCR-SSP OT - Single nucleotide polymorphism OT - Tumor necrosis factor-alpha EDAT- 2023/09/28 06:42 MHDA- 2023/09/28 06:42 CRDT- 2023/09/28 05:16 PHST- 2022/11/12 00:00 [received] PHST- 2023/07/15 00:00 [accepted] PHST- 2023/09/28 06:42 [medline] PHST- 2023/09/28 06:42 [pubmed] PHST- 2023/09/28 05:16 [entrez] AID - 10.18502/ijaai.v22i4.13606 [doi] PST - epublish SO - Iran J Allergy Asthma Immunol. 2023 Sep 3;22(4):337-344. doi: 10.18502/ijaai.v22i4.13606.