Karim Boudjema

Prof. Dr. Karim Boudjema

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Research Focus & Metrics

Academic Career Length

35Years (1992-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 March 2020 in Annals of Surgery
Verified
Journal Article
Closed access
KBKarim Boudjema
Karim Boudjema
CLClara Locher
Clara Locher
CSCharles Sabbagh
Charles Sabbagh
POPablo Ortega-Deballon
Pablo Ortega-Deballon
BHBruno Heyd
Bruno Heyd
EBEric Bellissant
Eric Bellissant
Objective: To answer whether synchronous colorectal cancer liver metastases (SLM) should be resected simultaneously with primary cancer or should be delayed. Summary Background Data: Numerous studies have compared both strategies. All were retrospective and conclusions were contradictory. Methods: Adults with colorectal cancer and resectable SLM were randomly assigned to either simultaneous or delayed resection of the metastases. The primary outcome was the rate of major complications within 60 days following surgery. Secondary outcomes included overall and disease-free survival. Results: A total of 105 patients were recruited. Eighty-five patients (39 and 46 in the simultaneous- and delayed-resection groups, respectively) were analyzed. The percentage of major perioperative complications did not differ between groups (49% and 46% in the simultaneous- and delayed-resection groups, respectively, adjusted OR 0.84, 95% CI 0.35–2.01; P = 0.70, logistic regression). Complications rates were 28% and 13% (P = 0.08, χ2 test) at colorectal site and 15% and 17% (P = 0.80, χ2 test) at liver site, in simultaneous- and delayed-resection groups, respectively. In the delayed-resection group, 8 patients did not reach the liver resection stage, and this was due to disease progression in 6 cases. After 2 years, overall and disease-free survival tended to be improved in simultaneous as compared with delayed-resection groups (P = 0.05), a tendency which persisted for OS after a median follow-up of 47 months. Conclusions: Complication rates did not appear to differ when colorectal cancer and synchronous liver metastases are resected simultaneously. Delayed resection tended to impair overall survival.

5 April 2011 in American Journal of Transplantation
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Journal Article
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KBKarim Boudjema
Karim Boudjema
CCC. Camus
C. Camus
FSF. Saliba
F. Saliba
YCY. Calmus
Y. Calmus
ESE. Salamé
E. Salamé
EBE. Bellissant
E. Bellissant
We conducted a multicenter randomized study in liver transplantation to compare standard‐dose tacrolimus to reduced‐dose tacrolimus with mycophenolate mofetil to reduce the occurrence of tacrolimus side effects. Two primary outcomes (censored criteria) were monitored during 48 weeks post‐transplantation: occurrence of renal dysfunction or arterial hypertension or diabetes (evaluating benefit) and occurrence of acute graft rejection (evaluating risk). Interim analyses were performed every 40 patients to stop the study in the case of increased risk of graft rejection. One hundred and ninety‐five patients (control: 100; experimental: 95) had been included when the study was stopped. Acute graft rejection occurred in 46 (46%) and 28 (30%) patients in control and experimental groups, respectively (HR = 0.59; 95% CI: [0.37–0.94]; p = 0.024). Renal dysfunction or arterial hypertension or diabetes occurred in 80 (80%) and 61 (64%) patients in control and experimental groups, respectively (HR = 0.68; 95% CI: [0.49–0.95]; p = 0.021). Renal dysfunction occurred in 42 (42%) and 23 (24%) patients in control and experimental groups, respectively (HR = 0.49; 95% CI: [0.29–0.81]; p = 0.004). Leucopoenia (p = 0.001), thrombocytopenia (p = 0.017) and diarrhea (p = 0.002) occurred more frequently in the experimental group. Reduced‐dose tacrolimus with mycophenolate mofetil reduces the occurrence of renal dysfunction and the risk of graft rejection. This immunosuppressive regimen could replace full‐dose tacrolimus in adult liver transplantation.

27 January 2015 in Annals of Surgical Oncology
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Journal Article
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MRM. Rayar
M. Rayar
LSL. Sulpice
L. Sulpice
JEJ. Edeline
J. Edeline
EGE. Garin
E. Garin
GSGiovanni Battista Levi Sandri
Giovanni Battista Levi Sandri
KBKarim Boudjema
Karim Boudjema

1 March 2013 in HPB
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Journal Article
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AGAntoine Guillaud
Antoine Guillaud
CPClaire Pery
Claire Pery
BCBoris Campillo
Boris Campillo
ALAnne Lourdais
Anne Lourdais
SLSulpice Laurent
Sulpice Laurent
KBKarim Boudjema
Karim Boudjema
In the last decade, thanks to advances in surgical and peri‐operative management, liver surgery has made considerable progress underpinned by the reduction in peri‐operative morbidity and mortality rates which are now below 45 % and 5%, respectively, in most series.1. x 1. Jarnagin, W.R., Gonen, M., Fong, Y., DeMatteo, R.P., Ben‐Porat, L., and Little, S. Improvement in perioperative outcome after hepatic resection: analysis of 1,803 consecutive cases over the past decade. Ann Surg. 2002; 236: 397–406 Crossref | PubMed | Scopus (1123) | Google Scholar See all References , 2. x 2. Poon, R.T., Fan, S.T., Lo, C.M., Liu, C.L., Lam, C.M., and Yuen, W.K. Improving perioperative outcome expands the role of hepatectomy in management of benign and malignant hepatobiliary diseases: analysis of 1222 consecutive patients from a prospective database. Ann Surg. 2004; 240: 698–708 PubMed | Google Scholar See all References

29 May 2020 in Annals of Surgical Oncology
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Journal Article
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DRDiane Riby
Diane Riby
Alessandro MazzottaAlessandro Mazzotta
Alessandro Mazzotta
DBDamien Bergeat
Damien Bergeat
LVLucas Verdure
Lucas Verdure
LSLaurent Sulpice
Laurent Sulpice
JEJulien Edeline
Julien Edeline

27 July 2022 in Annals of Surgery
Verified
Journal Article
Open access
EBEva Breuer
Eva Breuer
MMMatteo Mueller
Matteo Mueller
MDMajella B. Md Doyle
Majella B. Md Doyle
YLYang Liu
Yang Liu
SMSarwa Darwish Murad
Sarwa Darwish Murad
PCPierre-Alain Clavien
Pierre-Alain Clavien
Objective: To define benchmark values for liver transplantation (LT) in patients with perihilar cholangiocarcinoma (PHC) enabling unbiased comparisons. Background: Transplantation for PHC is used with reluctance in many centers and even contraindicated in several countries. Although benchmark values for LT are available, there is a lack of specific data on LT performed for PHC. Methods: PHC patients considered for LT after Mayo-like protocol were analyzed in 17 reference centers in 2 continents over the recent 5-year period (2014–2018). The minimum follow-up was 1 year. Benchmark patients were defined as operated at high-volume centers (≥50 overall LT/year) after neoadjuvant chemoradiotherapy, with a tumor diameter <3 cm, negative lymph nodes, and with the absence of relevant comorbidities. Benchmark cutoff values were derived from the 75th to 25th percentiles of the median values of all benchmark centers. Results: One hundred thirty-four consecutive patients underwent LT after completion of the neoadjuvant treatment. Of those, 89.6% qualified as benchmark cases. Benchmark cutoffs were 90-day mortality ≤5.2%; comprehensive complication index at 1 year of ≤33.7; grade ≥3 complication rates ≤66.7%. These values were better than benchmark values for other indications of LT. Five-year disease-free survival was largely superior compared with a matched group of nodal negative patients undergoing curative liver resection (n=106) (62% vs 32%, P<0.001). Conclusion: This multicenter benchmark study demonstrates that LT offers excellent outcomes with superior oncological results in early stage PHC patients, even in candidates for surgery. This provocative observation should lead to a change in available therapeutic algorithms for PHC.