PMID- 37226638 OWN - NLM STAT- MEDLINE DCOM- 20230803 LR - 20230804 IS - 1349-7006 (Electronic) IS - 1347-9032 (Print) IS - 1347-9032 (Linking) VI - 114 IP - 8 DP - 2023 Aug TI - Copy number gain of ACTN4 is associated with poor prognosis in patients with upper urinary tract urothelial carcinoma. PG - 3411-3422 LID - 10.1111/cas.15841 [doi] AB - alpha-Actinin4 (ACTN4), an isoform of non-muscular alpha-actinin, is involved in enhancing cell motility and promoting cancer infiltration and metastasis in various cancers. However, information remains limited regarding the pathological significance of ACTN4 expression in upper urinary tract urothelial carcinomas (UUTUCs). We obtained tumor samples from 168 consecutive patients with newly diagnosed UUTUCs (92 with renal pelvic cancers and 76 with ureteral cancers), who were treated with nephroureterectomy or partial ureterectomy, and analyzed the expression of the ACTN4 protein and the amplification of ACTN4 using immunohistochemistry and fluorescence in situ hybridization (FISH), respectively. The median follow-up duration was 65 months. Among 168 cases, 49 (29%) showed ACTN4 protein overexpression and 25 (15%) showed copy number gain (>/=4 copies per cell) of ACTN4. The copy number gain of ACTN4 detected using FISH significantly correlated with ACTN4 protein overexpression and several adverse clinicopathological factors, including higher pathological T stage, lymphovascular invasion, lymph node metastasis, positive surgical margin, concomitant subtype histology, and non-papillary gross finding. Cox univariate regression analyses revealed that both copy number gain of ACTN4 and ACTN4 protein overexpression were significant risk factors for extraurothelial recurrence and death (each p < 0.0001), but multivariate analysis revealed that only copy number gain of ACTN4 was an independent risk factor for extraurothelial recurrence and death (p = 0.038 and 0.027, hazard ratio = 2.16 and 2.17, respectively). This is the first study demonstrating the aberrant expression status of ACTN4 in UUTUC and indicating its putative usefulness as a prognostic indicator in patients with UUTUC. CI - (c) 2023 The Authors. Cancer Science published by John Wiley & Sons Australia, Ltd on behalf of Japanese Cancer Association. FAU - Kawamura, Kazuki AU - Kawamura K AD - Department of Urology, National Defense Medical College, Tokorozawa, Japan. AD - Department of Basic Pathology, National Defense Medical College, Tokorozawa, Japan. FAU - Miyai, Kosuke AU - Miyai K AUID- ORCID: 0000-0003-1776-3541 AD - Department of Basic Pathology, National Defense Medical College, Tokorozawa, Japan. AD - Department of Laboratory Medicine, National Defense Medical College, Tokorozawa, Japan. FAU - Sato, Kimiya AU - Sato K AD - Department of Basic Pathology, National Defense Medical College, Tokorozawa, Japan. FAU - Matsukuma, Susumu AU - Matsukuma S AD - Department of Laboratory Medicine, National Defense Medical College, Tokorozawa, Japan. FAU - Honda, Kazufumi AU - Honda K AUID- ORCID: 0000-0003-1321-5345 AD - Department of Bioregulation, Graduate School of Medicine, Nippon Medical School, Bunkyo-ku, Japan. FAU - Ito, Keiichi AU - Ito K AUID- ORCID: 0000-0001-8524-2903 AD - Department of Urology, National Defense Medical College, Tokorozawa, Japan. FAU - Tsuda, Hitoshi AU - Tsuda H AD - Department of Basic Pathology, National Defense Medical College, Tokorozawa, Japan. LA - eng PT - Journal Article DEP - 20230524 PL - England TA - Cancer Sci JT - Cancer science JID - 101168776 RN - 0 (Biomarkers, Tumor) RN - 0 (ACTN4 protein, human) RN - 11003-00-2 (Actinin) SB - IM MH - Humans MH - *Carcinoma, Transitional Cell MH - *Ureteral Neoplasms/genetics/surgery MH - DNA Copy Number Variations/genetics MH - In Situ Hybridization, Fluorescence MH - *Urinary Bladder Neoplasms MH - Biomarkers, Tumor/genetics/analysis MH - Prognosis MH - *Kidney Neoplasms MH - *Urinary Tract/chemistry MH - Retrospective Studies MH - Actinin/genetics PMC - PMC10394141 OTO - NOTNLM OT - epithelial-mesenchymal transition OT - fluorescence in situ hybridization OT - upper urinary tract OT - urothelial carcinoma OT - alpha-actinin4 COIS- The authors have no conflict of interest. Kazufumi Honda is an Associate Editor of Cancer Science. EDAT- 2023/05/25 06:42 MHDA- 2023/08/03 06:43 PMCR- 2023/05/24 CRDT- 2023/05/25 04:21 PHST- 2023/03/12 00:00 [revised] PHST- 2022/12/14 00:00 [received] PHST- 2023/04/25 00:00 [accepted] PHST- 2023/08/03 06:43 [medline] PHST- 2023/05/25 06:42 [pubmed] PHST- 2023/05/25 04:21 [entrez] PHST- 2023/05/24 00:00 [pmc-release] AID - CAS15841 [pii] AID - 10.1111/cas.15841 [doi] PST - ppublish SO - Cancer Sci. 2023 Aug;114(8):3411-3422. doi: 10.1111/cas.15841. Epub 2023 May 24.