Krystel Nyangoh Timoh

Dr. Krystel Nyangoh Timoh


Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

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

Representative Publications

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24 May 2022 in The Lancet Global Health
Verified
Journal Article
Open access
CSCatherine A Shaw
Catherine A Shaw
RPRiinu Pius
Riinu Pius
TDThomas M Drake
Thomas M Drake
LNLisa Norman
Lisa Norman
AAAdesoji O Ademuyiwa
Adesoji O Ademuyiwa
JLJean Wilguens Lartigue
Jean Wilguens Lartigue
Early death after cancer surgery is higher in low-income and middle-income countries (LMICs) compared with in high-income countries, yet the impact of facility characteristics on early postoperative outcomes is unknown. The aim of this study was to examine the association between hospital infrastructure, resource availability, and processes on early outcomes after cancer surgery worldwide. A multimethods analysis was performed as part of the GlobalSurg 3 study—a multicentre, international, prospective cohort study of patients who had surgery for breast, colorectal, or gastric cancer. The primary outcomes were 30-day mortality and 30-day major complication rates. Potentially beneficial hospital facilities were identified by variable selection to select those associated with 30-day mortality. Adjusted outcomes were determined using generalised estimating equations to account for patient characteristics and country-income group, with population stratification by hospital. Between April 1, 2018, and April 23, 2019, facility-level data were collected for 9685 patients across 238 hospitals in 66 countries (91 hospitals in 20 high-income countries; 57 hospitals in 19 upper-middle-income countries; and 90 hospitals in 27 low-income to lower-middle-income countries). The availability of five hospital facilities was inversely associated with mortality: ultrasound, CT scanner, critical care unit, opioid analgesia, and oncologist. After adjustment for case-mix and country income group, hospitals with three or fewer of these facilities (62 hospitals, 1294 patients) had higher mortality compared with those with four or five (adjusted odds ratio [OR] 3·85 [95% CI 2·58–5·75]; p<0·0001), with excess mortality predominantly explained by a limited capacity to rescue following the development of major complications (63·0% vs 82·7%; OR 0·35 [0·23–0·53]; p<0·0001). Across LMICs, improvements in hospital facilities would prevent one to three deaths for every 100 patients undergoing surgery for cancer. Hospitals with higher levels of infrastructure and resources have better outcomes after cancer surgery, independent of country income. Without urgent strengthening of hospital infrastructure and resources, the reductions in cancer-associated mortality associated with improved access will not be realised. National Institute for Health and Care Research.

4 November 2016 in Neurourology and Urodynamics
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Journal Article
Closed access
PDF file
KTKrystel Nyangoh Timoh
Krystel Nyangoh Timoh
TBThomas Bessede
Thomas Bessede
Cedric LEBACLECedric LEBACLE
Cedric LEBACLE
MZMazen Zaitouna
Mazen Zaitouna
JMJelena Martinovic
Jelena Martinovic
DMDavid Moszkowicz
David Moszkowicz

1 January 2019 in Journal of Minimally Invasive Gynecology
Verified
Journal Article
Closed access
SDSophie Delplanque
Sophie Delplanque
MLMaela Le Lous
Maela Le Lous
MPMaïa Proisy
Maïa Proisy
YJYolaine Joueidi
Yolaine Joueidi
EBEstelle Bauville
Estelle Bauville
KTKrystel Nyangoh Timoh
Krystel Nyangoh Timoh

1 January 2018 in American Journal of Obstetrics and Gynecology
Verified
Journal Article
Closed access
KTKrystel Nyangoh Timoh
Krystel Nyangoh Timoh
DMDavid Moszkowicz
David Moszkowicz
MZMazen Zaitouna
Mazen Zaitouna
Cedric LEBACLECedric LEBACLE
Cedric LEBACLE
JMJelena Martinovic
Jelena Martinovic
TBThomas Bessede
Thomas Bessede

Verified
Journal Article
Open access
PDF file
LDLudivine Dion
Ludivine Dion
ICIsis Carton
Isis Carton
SJSylvie Jaillard
Sylvie Jaillard
KTKrystel Nyangoh Timoh
Krystel Nyangoh Timoh
SHSébastien Henno
Sébastien Henno
Vincent LavouéVincent Lavoué
Vincent Lavoué
Epithelial ovarian cancer (EOC) affects 43,000 women worldwide every year and has a five-year survival rate of 30%. Mainstay treatment is extensive surgery and chemotherapy. Outcomes could be improved by molecular profiling. We conducted a review of the literature to identify relevant publications on molecular and genetic alterations in EOC. Approximately 15% of all EOCs are due to BRCA1 or BRCA2 mutations. Four histologic subtypes characterized by different mutations have been described: serous, endometrioid, mucinous, and clear-cell. Between 20–30% of high-grade serous EOCs have a BRCA mutation. Tumors with BRCA mutations are unable to repair double-strand DNA breaks, making them more sensitive to platinum-based chemotherapy and to PolyAdenosine Diphosphate-Ribose Polymerase (PARP) inhibitors. Olaparib is a PARP inhibitor with proven efficacy in BRCA-mutated ovarian cancer, but its effectiveness remains to be demonstrated in tumors with a BRCAness (breast cancer) profile (i.e., also including sporadic tumors in patients with deficient DNA repair genes). A universally accepted molecular definition of BRCAness is required to identify optimal theranostic strategies involving PARP inhibitors. Gene expression analyses have led to the identification of four subgroups of high-grade serous EOC: mesenchymal, proliferative, differentiated, and immunoreactive. These subtypes are not mutually exclusive but are correlated with prognosis. They are not yet used in routine clinical practice. A greater understanding of EOC subtypes could improve patient management.

Verified
Journal Article
Open access
PDF file
LDLudivine Dion
Ludivine Dion
MCmimoun camille
mimoun camille
KTKrystel Nyangoh Timoh
Krystel Nyangoh Timoh
SBSofiane Bendifallah
Sofiane Bendifallah
ABAlexandre Bricou
Alexandre Bricou
Vincent LavouéVincent Lavoué
Vincent Lavoué
Background and objective: Elderly and/or frail women with ovarian cancer are often undertreated. The aim of the study is to compare the effects of age and frailty on surgical approaches, postoperative complications, and prognosis in elderly women with ovarian cancer. Methods: A retrospective multicenter study of women ≥70 years were treated for ovarian cancer at seven French university hospitals between 2007 and 2015. Results: Of the 1119 women treated for ovarian cancer during the study period, 147 were ≥70 years and had complete data. Of these women, 65 were aged 70–74 years, and 82 were aged ≥75 years. Overall, 77% of the younger women (49/65) received optimal treatment compared with 51% (40/82) of the older women (p = 0.018). Women ≥75 years underwent fewer bowel resections (32% vs. 67%, p < 0.001) and experienced fewer postoperative complications (22.6% vs. 38.9%, p < 0.001); 53.2% of the women in this age group were treated by primary surgery or surgery only. These women also received more chemotherapy with platinum only (15% [9/56] vs. 2% [1/57], p = 0.007) and less bevacizumab (9% [5/56] vs. 32% [18/57], p = 0.003). Patients with greater frailty (a modified Charlson Comorbidity Index [mCCI] score >3) had a five-year survival rate of 30% versus 62% for those with a score ≤3 (p < 0.001). Conclusions: Surgeons modify their approach to treating ovarian cancer in women ≥75 years probably to reduce immediate postoperative complications. The prognosis is significantly worse in patients with greater frailty. Improvements to the sequence of treatments administered, with priority given to neoadjuvant chemotherapy in patients with greater frailty, could help increase the number of women who receive optimal treatment and improve their prognosis.