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Chinese Journal of Lung Diseases(Electronic Edition) ›› 2024, Vol. 17 ›› Issue (06): 936-941. doi: 10.3877/cma.j.issn.1674-6902.2024.06.015

• Original articles • Previous Articles    

Prognostic significance of SCARA5 methylation in adjuvant chemotherapy for resectable non-small cell lung cancer

Mi Jiao1, Yahuan Guo1, Lian Duan1, Fang Fang2,()   

  1. 1.Department of Oncology, Shaanxi Provincial Tumor Hospital, Xi'an 710061, China
    2.Resipratory and Critical Care Medicine, Xi'an Chest Hospital, Xi'an 710061, China
  • Received:2024-09-13 Online:2024-12-25 Published:2025-01-23
  • Contact: Fang Fang

Abstract:

Objective

To analyze prognostic significance of scavenger receptor class A member 5(SCARA5) methylation in adjuvant chemotherapy (ACT) for non-small cell lung cancer (NSCLC).

Methods

All of 69 patients with stage ⅠA~ⅢA NSCLC admitted to our hospital from May 2018 to January 2023 were selected as subjects.The methylation level of SCARA5 was detected by targeted bisulfite sequencing and realtime quantitative methylation-specific polymerase chain reaction ( RQ-MSP ).Real-time fluorescence quantitative polymerase chain reaction (qRT-PCR) was used to detect SCARA5 mRNA levels and Spearman was used to analyze the correlation. Kaplan-Meier survival curve and COX risk proportional model were used to analyze the effect of SCARA5 methylation on prognosis.

Results

The methylation level of SCARA5 in NSCLC tumor tissue was 9.32(7.59,10.80) and 7.45 (6.36,8.55),respectively.SCARA5 mRNA in tumor tissue 3.22(2.86,4.14) was lower than that in paracancer tissue4.01 (3.53,4.46) (P <0.05).SCARA5 hypermethylation (median ≥9.32) at 6 months,9 months,12 months relative dose intensity (relative dose intensity,RDI≥70% in 20 (57.14%),16 (45.71%),13 (19.12%) were lower than those in SCARA5 hypomethyl group 28(82.35%),28(82.35%),24(35.29%) (P<0.05).There were 30 cases (43.48%) with recurrence,and the median relapse-free survival was 21.00months.The follow-up was 28.00months,and 28 cases (40.58%) died.COD analysis showed that SCARA5 methylation was correlated with OS[HR:3.503(95%CI:1.327-9.248)] and DFS[HR:2.393(95%CI:1.075-5.329)] of ACT after NSCLC.The methylation level of SCARA5 in tumor tissue was negatively correlated with the mrna level of ScarA5 (Rho=-0.254, P=0.035).SCARA5 hypermethylated DFS 40.00% was lower than SCARA5 hypomethylated DFS 73.53%,and SCARA5 hypermethylated OS 37.14% was lower than SCARA5 hypomethylated OS 82.35%(P <0.05).

Conclusion

Hypermethylation of SCARA5 in resectable NSCLC after ACT has a poor prognosis,and SCARA5 can be a prognostic indicator of NSCLC.

Key words: Non-small cell lung cancer, Class A scavenger receptor type 5, Adjuvant chemotherapy, Prognosis

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