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Parigi TL, Cannatelli R, Nardone OM, Zammarchi I, Shivaji U, Furfaro F, Zardo D, Spaggiari P, Del Sordo R, Setti O, Majumder S, Smith SCL, Danese S, Armuzzi A, Villanacci V, Ghosh S, Iacucci M. Neutrophil-only Histological Assessment of Ulcerative Colitis Correlates with Endoscopic Activity and Predicts Long-term Outcomes in a Multicentre Study. J Crohns Colitis 2023; 17:1931-1938. [PMID: 37390319 PMCID: PMC10798862 DOI: 10.1093/ecco-jcc/jjad110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Indexed: 07/02/2023]
Abstract
BACKGROUNDS AND AIMS Absence of neutrophils is the minimum standard to consider histological remission of ulcerative colitis [UC]. The PICaSSO Histological Remission Index [PHRI] is a new simple index for UC, based only on the detection of neutrophils. We evaluate PHRI's correlation with endoscopy and its prognostic value compared with other established indices. METHODS Consecutive patients with UC underwent colonoscopy at two referral centres [Birmingham, UK, and Milan, Italy,] and were followed up for 2 years. Correlation between histology (PHRI, Nancy [NHI], and Robarts [RHI] indexes) and endoscopy (Mayo Endoscopic Score [MES], Ulcerative Colitis Endoscopic Index of Severity [UCEIS], and PICaSSO index) was calculated as Spearman coefficients. Diagnostic performance of endoscopy was assessed with receiver operating characteristic [ROC] curves and outcome stratification with Kaplan-Meier curves. RESULTS A total of 192 patients with UC was enrolled, representing all grades of endoscopic severity. Correlation between histology and endoscopy did not differ significantly when using PHRI instead of NHI or RHI. In particular, PHRI's correlation with MES, UCEIS, and PICaSSO was 0.745, 0.718, and 0.694, respectively. Endoscopically-assessed remission reflected the absence of neutrophils [PHRI = 0] with areas under the ROC curve of 0.905, 0.906, and 0.877 for MES, UCEIS, and PICaSSO, respectively. The hazard ratio for disease flare between patients in histological activity/remission was statistically similar [p >0.05] across indexes [2.752, 2.706, and 2.871 for RHI, NHI, and PHRI, respectively]. CONCLUSION PHRI correlates with endoscopy and stratifies risk of relapse similarly to RHI and NHI. Neutrophil-only assessment of UC is a simple yet viable alternative to established histological scores.
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Affiliation(s)
- Tommaso L Parigi
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- Department of Immunology, Transplantation and Infectious Diseases, University Vita-Salute San Raffaele, Milan, Italy
| | - Rosanna Cannatelli
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- Gastroenterology Unit, Department of Biomedical and Clinical Sciences ‘L. Sacco’, University of Milan, Milan, Italy
| | - Olga M Nardone
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- Gastroenterology, Department of Public Health, University of Naples Federico II, Naples, Italy
| | - Irene Zammarchi
- Dipartimento Medicina Interna e Terapia Medica, University of Pavia, Pavia, Italy
- Gastroenterology Unit, ASST-Spedali Civili Brescia, Brescia, Italy
| | - Uday Shivaji
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- University Hospitals Birmingham NHS Foundation Trust, Gastroenterology, Birmingham, UK
| | - Federica Furfaro
- Department of Gastroenterology and Digestive Endoscopy, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Davide Zardo
- Department of Pathology, San Bortolo Hospital, Vicenza, Italy
| | - Paola Spaggiari
- Pathology Unit, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | - Rachele Del Sordo
- Department of Medicine and Surgery, Section of Anatomic Pathology and Histology, Medical School, University of Perugia, Perugia, Italy
| | - Orsola Setti
- Institute of Pathology, ASST-Spedali Civili Brescia, Brescia, Italy
| | - Snehali Majumder
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
| | - Samuel C L Smith
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- University Hospitals Birmingham NHS Foundation Trust, Gastroenterology, Birmingham, UK
| | - Silvio Danese
- Department of Immunology, Transplantation and Infectious Diseases, University Vita-Salute San Raffaele, Milan, Italy
- Department of Gastroenterology and Digestive Endoscopy, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Alessandro Armuzzi
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
- IBD Center, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
| | | | - Subrata Ghosh
- College of Medicine and Health, University College Cork, and APC Microbiome Ireland, Cork, Ireland
| | - Marietta Iacucci
- Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, UK
- College of Medicine and Health, University College Cork, and APC Microbiome Ireland, Cork, Ireland
- Division of Gastroenterology, NIHR Birmingham Biomedical Research Centre, Birmingham, UK
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