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Logeart J, Samaille T, Falcoz A, Svrcek M, Dubreuil O, Vernerey D, Cohen R, Cervera P, Valverde A, Parc Y, André T. Survival Outcomes in Patients with Monobloc-Resected Stage IIC (pT4bN0) Colon Cancer: A Retrospective Observational Cohort Study. Clin Colorectal Cancer 2024:S1533-0028(24)00036-7. [PMID: 38853098 DOI: 10.1016/j.clcc.2024.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 06/11/2024]
Abstract
BACKGROUND Stage II colon cancer (CC) exhibits considerable prognostic heterogeneous. Our objective was to assess survival but also the prognosis impact of microsatellite instability (MSI) in patients with stage IIC (T4bN0M0) CC. PATIENTS AND METHODS We conducted a retrospective observational study including all patients who had primary stage IIC CC resection between 2010 and 2020 in 2 expert centers. The primary endpoint was overall survival (OS) and disease-free survival (DFS) and time-to-relapse (TTR) were secondary endpoints. RESULTS Sixty-six patients, median age of 74 years [30-95], were included, with 37.9% presenting MSI (n = 25). Organ invasion involved the last ileal loop (n = 17), another colonic segment (n = 15), omentum (n = 13), visceral peritoneum (n = 13), and the bladder (n = 4). Surgical quality criteria showed complete monobloc resection in all patients and 93.9% R0 resection. After a median follow-up of 5 years [3.5-6.6], the entire population showed a 5-year OS of 65.2% [53.0-80.3] and 5-year DFS of 53.5% [41.1-69.6], with 18.9% [6.8-29.4] experiencing relapses at 5 years. The MSI phenotype correlated with improved 5-year OS (75.5% [56.5-100] vs. 59.5% [44.9-79.0], HR 0.41 [0.17-0.99]; P = .04), but DFS and TTR did not differ. Adjuvant chemotherapy was administered to 34.9% of patients. Univariate analysis identified age > 65 years, MSI status, and the number of nodes as factors associated with OS. CONCLUSION These data underline, in relation to a low rate of relapse, the lack of consensus regarding the appropriate indication for adjuvant chemotherapy in this high-risk stage II population.
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Affiliation(s)
- Juliette Logeart
- Sorbonne université, Departement of Medical Oncology, Saint Antoine Hospital, APHP, Paris, France; INSERM, Unité Mixte de Recherche Scientifique 938 and SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, Equipe labellisée par la Ligue Nationale contre le Cancer, Sorbonne Université, Paris, France
| | - Thomas Samaille
- Sorbonne université, Departement of Medical Oncology, Saint Antoine Hospital, APHP, Paris, France
| | - Antoine Falcoz
- Department of Methodology and Quality of Life Unit in Oncology, University Hospital of Besançon, Besançon, France; University Bourgogne Franche-Comté, EFS, INSERM, UMR RIGHT, Besançon, France
| | - Magali Svrcek
- Department of Pathology, Saint-Antoine Hospital, AP-HP, Sorbonne Université, Paris, France
| | - Olivier Dubreuil
- Department of Digestive Oncology, Groupe Hospitalier Diaconesses Croix Saint Simon, Paris, France
| | - Dewi Vernerey
- Department of Methodology and Quality of Life Unit in Oncology, University Hospital of Besançon, Besançon, France; University Bourgogne Franche-Comté, EFS, INSERM, UMR RIGHT, Besançon, France
| | - Romain Cohen
- Sorbonne université, Departement of Medical Oncology, Saint Antoine Hospital, APHP, Paris, France; INSERM, Unité Mixte de Recherche Scientifique 938 and SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, Equipe labellisée par la Ligue Nationale contre le Cancer, Sorbonne Université, Paris, France
| | - Pascale Cervera
- University Bourgogne Franche-Comté, EFS, INSERM, UMR RIGHT, Besançon, France
| | - Alain Valverde
- Department of Digestive Surgery, Groupe Hospitalier Diaconesses Croix Saint Simon, Paris, France
| | - Yann Parc
- Department of Digestive Surgery, AP-HP, Saint-Antoine Hospital, Sorbonne Université, Paris, France
| | - Thierry André
- Sorbonne université, Departement of Medical Oncology, Saint Antoine Hospital, APHP, Paris, France; INSERM, Unité Mixte de Recherche Scientifique 938 and SIRIC CURAMUS, Centre de Recherche Saint-Antoine, Equipe Instabilité des Microsatellites et Cancer, Equipe labellisée par la Ligue Nationale contre le Cancer, Sorbonne Université, Paris, France.
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Gülşen T, Ergenç M, Şenol Z, Emirzeoğlu L, Güleç B. Clinicopathological outcomes of microsatellite instability in colorectal cancer. J Cancer Res Ther 2024; 20:103-111. [PMID: 38554306 DOI: 10.4103/jcrt.jcrt_1560_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 09/04/2022] [Indexed: 04/01/2024]
Abstract
AIMS This study aims to evaluate the histopathological features and prognostic parameters of tumors with microsatellite instability (MSI) compared with those without MSI in patients who underwent surgery for colorectal cancer (CRC). SETTING AND DESIGN Follow-up for CRC at Istanbul Sultan 2. Abdulhamid Han Training and Research Hospital was retrospectively evaluated between March 2017 and March 2021. METHODS AND MATERIAL The patients were divided into two groups: those with and without MSI. Groups were compared in survival parameters. As a secondary result, groups were compared in pathological parameters such as stage, tumor diameter, degree of differentiation, and lymphovascular, and perineural invasion. STATISTICAL ANALYSIS USED Survival calculations were performed using the Kaplan-Meier analysis method. The effects of various prognostic factors related to tumor and patient characteristics on disease-free and overall survival (OS) were investigated by log-rank test. RESULTS Two hundred fourteen patients were analyzed. The median age of the patients was 66 (30-89), and 59.3% (n = 127) were male. There were 25 patients in the MSI group and 189 patients in the non-MSI group. We found that MSI tumors had a significantly higher differentiation degree than non-MSI tumors and larger tumor diameters. MSI tumors frequently settled in the proximal colon, and more lymph nodes were removed in the resection material. MSI tumors had longer disease-free survival, cancer-specific survival, and overall survival. CONCLUSIONS By diagnosing microsatellite instability, CRCs can be divided into two groups. The histopathological features of the tumor and the prognosis of the disease differ between these groups. MSI can be a predictive marker in the patient's follow-up and treatment.
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Affiliation(s)
- Taygun Gülşen
- Department of General Surgery, Istanbul Sultanbeyli State Hospital, Istanbul, Turkey
| | - Muhammer Ergenç
- Department of General Surgery, Istanbul Sultanbeyli State Hospital, Istanbul, Turkey
| | - Zafer Şenol
- Department of General Surgery, Istanbul Sultan 2, Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Levent Emirzeoğlu
- Department of Oncology, Istanbul Sultan 2, Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Bülent Güleç
- Department of General Surgery, Istanbul Sultan 2, Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
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High-yield areas to grade tumor budding in colorectal cancer: A practical approach for pathologists. Ann Diagn Pathol 2023; 63:152085. [PMID: 36577186 DOI: 10.1016/j.anndiagpath.2022.152085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 12/11/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
BACKGROUND Tumor budding (TB) has significant prognostic implication in stage II colorectal cancer (CRC) and is graded based on the International Tumor Budding Consensus Conference (ITBCC) protocol. In the current study, we evaluate tumor budding and its relationship to multiple histologic features in 104 tumors. METHODS One-hundred four resected CRC cases were retrieved. Tumor bud count and TB grade were compared to the final tumor bud count/TB grade of the tumor per ITBCC protocol. The following high-yield co-features were assessed in each slide: highest T stage, presence of benign mucosa, presence of a precursor lesion, and highest tumor volume. RESULTS Twenty-nine (28 %) cases had discrepancies between slide TB grade and final TB grade. The least discrepancies were seen in slides with benign mucosa (7 %) and precursor lesions (7 %). Among stage II patients without high-risk features, no discrepancies were observed in slides with benign mucosa. Slides with deepest invasion (rs = 1.000, p = 0.01) and benign mucosa (rs = 0.957, p < 0.001) had the strongest correlation with final tumor bud count in the same stage II subgroup. Similar relationships were observed when comparing final TB grade. Deepest invasion, tumor volume, as well as lymphovascular invasion, when present, also showed strong correlations with final TB grade in the entire cohort (rs = 0.828-0.845, p < 0.001). CONCLUSION Our study is the first study to evaluate the relationship between TB grade and co-existing histologic features. We highlight the benefit of focusing on slides with high-yield co-features, with the strongest correlation seen in slides with adjacent benign mucosa and precursor lesions.
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Han S, Chok AY, Peh DYY, Ho JZM, Tan EKW, Koo SL, Tan IBH, Ong JCA. The distinct clinical trajectory, metastatic sites, and immunobiology of microsatellite-instability-high cancers. Front Genet 2022; 13:933475. [DOI: 10.3389/fgene.2022.933475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 10/17/2022] [Indexed: 12/03/2022] Open
Abstract
Microsatellite-instability-high (MSI-H) cancers form a spectrum of solid organ tumors collectively known as Lynch Syndrome cancers, occurring not only in a subset of colorectal, endometrial, small bowel, gastric, pancreatic, and biliary tract cancers but also in prostate, breast, bladder, and thyroid cancers. Patients with Lynch Syndrome harbor germline mutations in mismatch repair genes, with a high degree of genomic instability, leading to somatic hypermutations and, therefore, oncogenesis and cancer progression. MSI-H cancers have unique clinicopathological characteristics compared to their microsatellite-stable (MSS) counterparts, marked by a higher neoantigen load, immune cell infiltration, and a marked clinical response to immune checkpoint blockade. Patients with known Lynch Syndrome may be detected early through surveillance, but some patients present with disseminated metastatic disease. The treatment landscape of MSI-H cancers, especially colorectal cancers, has undergone a paradigm shift and remains to be defined, with immune checkpoint blockade coming to the forefront of treatment strategies in the stage IV setting. We summarize in this review the clinical features of MSI-H cancers with a specific interest in the pattern of spread or recurrence, disease trajectory, and treatment strategies. We also summarize the tumor-immune landscape and genomic profile of MSI-H cancers and potential novel therapeutic strategies.
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