PMID- 37572023 OWN - NLM STAT- MEDLINE DCOM- 20230814 LR - 20230815 IS - 1473-2300 (Electronic) IS - 0300-0605 (Print) IS - 0300-0605 (Linking) VI - 51 IP - 8 DP - 2023 Aug TI - Nomogram for predicting survival of patients with gastric cancer and multiple primary malignancies: a real-world retrospective analysis using the Surveillance, Epidemiology and End Results database. PG - 3000605231187944 LID - 10.1177/03000605231187944 [doi] LID - 03000605231187944 AB - OBJECTIVES: Gastric cancer combined with multiple primary malignancies (GCM) is increasingly common. This study investigated GCM clinical features and survival time. METHODS: Patients with GCM and GC only (GCO) were selected from the Surveillance, Epidemiology and End Results (SEER) database. Survival was compared between GCM and GCO groups using propensity score matching. Then, the GCM group was divided into a training cohort and a validation cohort. These cohorts were used to establish a nomogram for survival prediction in patients with GCM. RESULTS: Survival time was significantly longer in the GCM group than in the GCO group. All-subsets regression was used to identify four variables for nomogram establishment: age, gastric cancer sequence, N stage, and surgery. The concordance index and time-dependent receiver operating characteristic curve indicated that the nomogram had favorable discriminative ability. Calibration plots of predicted and actual probabilities showed good consistency in both the training and validation cohorts. Decision curve analysis and risk stratification showed that the nomogram was clinically useful; it had favorable discriminative ability to recognize patients with different levels of risk. CONCLUSIONS: Compared with GCO, GCM is a relatively indolent malignancy. The nomogram developed in this study can help clinicians to assess GCM prognosis. FAU - Mei, Linhang AU - Mei L AD - Department of Surgical Oncology, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang, China. FAU - Feng, Jie AU - Feng J AD - Department of Traumatic Orthopedics, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang, China. FAU - Zhao, Lingdan AU - Zhao L AD - Department of General Practice, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang, China. FAU - Zheng, Xiaokang AU - Zheng X AD - Emergency Department, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang, China. FAU - Li, Xiao AU - Li X AUID- ORCID: 0000-0002-9404-595X AD - Department of General Surgery, Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang, China. LA - eng PT - Journal Article PL - England TA - J Int Med Res JT - The Journal of international medical research JID - 0346411 SB - IM MH - Humans MH - *Stomach Neoplasms/epidemiology MH - Nomograms MH - Retrospective Studies MH - Patients MH - *Neoplasms, Multiple Primary MH - Prognosis PMC - PMC10423457 OTO - NOTNLM OT - Nomogram OT - SEER database OT - gastric cancer OT - multiple primary malignancies OT - prognosis OT - propensity score OT - receiver operating characteristic curve OT - stomach neoplasm OT - survival COIS- The authors declare that there is no conflict of interest. EDAT- 2023/08/13 00:43 MHDA- 2023/08/14 06:43 PMCR- 2023/08/12 CRDT- 2023/08/12 07:22 PHST- 2023/08/14 06:43 [medline] PHST- 2023/08/13 00:43 [pubmed] PHST- 2023/08/12 07:22 [entrez] PHST- 2023/08/12 00:00 [pmc-release] AID - 10.1177_03000605231187944 [pii] AID - 10.1177/03000605231187944 [doi] PST - ppublish SO - J Int Med Res. 2023 Aug;51(8):3000605231187944. doi: 10.1177/03000605231187944.