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Frédéric Ris is an expert in Surgery at University Hospital of Geneva (Switzerland). As of September 2026, ScienceLeadR ranks Frédéric Ris in the top 1% of experts worldwide for Rectal Diseases, Intestinal Neoplasms and Colonic Diseases. Frédéric Ris has authored 352 publications, the most recent in 2026, and is an investigator in 15 clinical trials, 3 of them ongoing. SLR score: 1,094 (community average: 125). How the SLR is computed.

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Frédéric Ris University Hospital of Geneva Switzerland
1 094 ScienceLeadR Reputation 1094

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Surgery

Subspecialties: Oncology - Gastroenterology - Public Health

Full career – Last 3 years

Main Topics

Publications and Clinical Studies

Publications – Clinical Studies

Profile data updated on

Expert Rankings

Top experts on the MeSH terms this expert works on

Organizations

Career arc: 2002 - 2026
Source: PubMed

University Hospital of Geneva

Publications Synthesis

Sources: PubMed, OpenAlex

Number : 352

Citations

Citations: 9 863 1st author: 22 Last author: 79 Unique author: 0

Main journals

Colorectal Dis 37
Br J Surg 21
Rev Med Suisse 17
Surg Endosc 16
Tech Coloproctol 14

Best Journals

Nat Med 2
Ann Oncol 1
J Clin Oncol 1

Breakdown by type

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Latest Publications

5 most recent indexed articles

Source: Pubmed

Title Journal Year Citations
Knowledge, practice, and barriers to opportunistic salpingectomy during non-gynaecological surgery: international survey.
PMID 42803786 — salpingectomy		BJS Open20260
Persistent Gender Gaps on Editorial Boards of Digestive DiseasesJournals: A Cross-sectional Study.
PMID 42743089 — cross-sectional studies, gastroenterology		Dig Surg20260
Evaluating quality of colorectal cancer surgery across elective and emergency health systems: secondary analysis of prospective cohort studies in 95 countries.
PMID 42483900 — global health, emergencies, surgical procedures, operative, neoplasms, income, cohort studies, colorectal neoplasms		BJS Open20260
Robotic right hemicolectomy with intracorporeal anastomosis versus laparoscopic right hemicolectomy with extracorporeal anastomosis (PRORHEM): protocol for a randomized controlled trial.
PMID 42420958 — incidence, lymph node excision, surgical procedures, operative, recycling, lymph, colectomy		BMC Surg20260
Mesh Fixation in Ventral Rectopexy: Is Rectal Anchoring Really Justified?
PMID 42283320 — colorectal surgery		Dis Colon Rectum20260

Clinical Studies 15

Sources: ClinicalTrials, EU CTIS

Synthesis

Principal Investigator: 5

By phase:

N/A 11
Phase 2 2
Phase 1 1
Phase 4 1

By status:

Unknown 6
Completed 3
Recruiting 3
Active not recruiting 1
Not yet recruiting 1
Suspended 1

By type:

Interventional 10
Observational 5

By Monocentric/Multicentric:

monocentric 10
multicentric2to4 3
multicentric5to9 1
multicentricup10 1

Main Topics

Cohort/Consortium Investigators 13

Ongoing Clinical Trials

3 ongoing trials started since 2021, where this expert is an investigator

Source: ClinicalTrials

Study Phase Status Start
Low Stable Pressure Pneumoperitoneum in Colorectal Surgery (CROSS STUDY)
NCT06154785 — neoplasms, pathology, cohort studies, colon, pneumoperitoneum, colorectal surgery		N/ARecruiting2023
Robotic Right Hemicolectomy Versus Laparoscopic Right Hemicolectomy
NCT06067620 — neoplasms, adenocarcinoma, polyps, adenoma, colorectal neoplasms, colectomy		N/ANot yet recruiting2024
Reducing the Incidence of Incisional Hernia After Stoma Closure Using a Prophylactic Mesh
NCT04510558 — hernia, skin, metronidazole, colostomy, incidence, aponeurosis, cefuroxime, disinfection, ileostomy, laparotomy, dissection, incisional hernia		N/ARecruiting2021

LeadR Networks

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Sources: PubMed, OpenAlex, ClinicalTrials, EU CTIS