Winnie Yeo

Prof. Winnie Yeo

orcid

Research Focus & Metrics

Academic Career Length

32Years (1995-Present)

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

Representative Publications

View All Publications
1 June 2017 in The Lancet
Verified
Journal Article
Closed access
AEAnthony B El-Khoueiry
Anthony B El-Khoueiry
BSBruno Sangro
Bruno Sangro
TYThomas Yau
Thomas Yau
TCTodd S Crocenzi
Todd S Crocenzi
MKMasatoshi Kudo
Masatoshi Kudo
IMIGNACIO MELERO
IGNACIO MELERO

20 February 2015 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
PJPhilip Johnson
Philip Johnson
SBSarah Berhane
Sarah Berhane
CKChiaki Kagebayashi
Chiaki Kagebayashi
SSShinji Satomura
Shinji Satomura
MTMabel Teng
Mabel Teng
HTHidenori Toyoda
Hidenori Toyoda
Purpose: Most patients with hepatocellular carcinoma (HCC) have associated chronic liver disease, the severity of which is currently assessed by the Child-Pugh (C-P) grade. In this international collaboration, we identify objective measures of liver function/dysfunction that independently influence survival in patients with HCC and then combine these into a model that could be compared with the conventional C-P grade. Patients and Methods: We developed a simple model to assess liver function, based on 1,313 patients with HCC of all stages from Japan, that involved only serum bilirubin and albumin levels. We then tested the model using similar cohorts from other geographical regions (n = 5,097) and other clinical situations (patients undergoing resection [n = 525] or sorafenib treatment for advanced HCC [n = 1,132]). The specificity of the model for liver (dys)function was tested in patients with chronic liver disease but without HCC (n = 501). Results: The model, the Albumin-Bilirubin (ALBI) grade, performed at least as well as the C-P grade in all geographic regions. The majority of patients with HCC had C-P grade A disease at presentation, and within this C-P grade, ALBI revealed two classes with clearly different prognoses. Its utility in patients with chronic liver disease alone supported the contention that the ALBI grade was indeed an index of liver (dys)function. Conclusion: The ALBI grade offers a simple, evidence-based, objective, and discriminatory method of assessing liver function in HCC that has been extensively tested in an international setting. This new model eliminates the need for subjective variables such as ascites and encephalopathy, a requirement in the conventional C-P grade.

1 February 2009 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
WYWinnie Yeo
Winnie Yeo
TCTung C. Chan
Tung C. Chan
NLNancy W.Y. Leung
Nancy W.Y. Leung
WLWai Y. Lam
Wai Y. Lam
FMFrankie K.F. Mo
Frankie K.F. Mo
CCChan Chan
Chan Chan
Purpose: Reactivation of hepatitis B virus (HBV) infection is a well-recognized complication in cancer patients with chronic HBV (hepatitis B surface antigen [HBsAg] positive) undergoing cytotoxic chemotherapy. In patients who have resolved HBV (HBsAg negative and antibody to hepatitis B core antigen [anti-HBc] ± antibody to hepatitis B surface antigen [anti-HBs] positive), such incidence has been much less common until recent use of rituximab. In this study on HBsAg-negative/anti-HBc–positive lymphoma patients, the objectives were to determine the HBV reactivation rate in patients treated with rituximab-containing chemotherapy and to compare it with the rate in patients treated without rituximab. Patients and Methods: Between January 2003 and December 2006, all patients diagnosed with CD20+ diffuse large B-cell lymphoma (DLBCL) had HBsAg determined before anticancer therapy. They were treated with either cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) alone or rituximab plus CHOP (R-CHOP). HBsAg-negative patients had anti-HBc determined; serum was stored for anti-HBs and HBV DNA. All patients were observed for HBV reactivation, which was defined as detectable HBV DNA with ALT elevation during and for 6 months after anticancer therapy. Results: Among 104 CD20+ DLBCL patients, 80 were HBsAg negative. Of the latter, 46 patients (44.2%) were HBsAg negative/anti-HBc positive; 25 of these patients were treated with CHOP, and none had HBV reactivation. In contrast, among the 21 patients treated with R-CHOP, five developed HBV reactivation, including one patient who died of hepatic failure (P = .0148). Exploratory analysis identified male sex, absence of anti-HBs, and use of rituximab to be predictive of HBV reactivation. Conclusion: Among HBsAg-negative/anti-HBc–positive DLBCL patients treated with R-CHOP, 25% developed HBV reactivation. Close monitoring until at least 6 months after anticancer therapy is required, with an alternative approach of prophylactic antiviral therapy to prevent this potentially fatal condition.

19 October 2005 in JNCI: Journal of the National Cancer Institute
Verified
Journal Article
Open access
PDF file
WYWinnie Yeo
Winnie Yeo
TMTony S. Mok
Tony S. Mok
BZBenny Chung-Ying Zee
Benny Chung-Ying Zee
TLThomas W. T. Leung
Thomas W. T. Leung
PLPaul B. S. Lai
Paul B. S. Lai
PJPhilip J. Johnson
Philip J. Johnson
Background: Single-agent doxorubicin has been widely used to treat unresectable hepatocellular carcinoma (HCC), but the response rate is low (<20%) and there is no convincing evidence for improved survival. Cisplatin, interferon, doxorubicin, and fluorouracil (PIAF) used in combination, by contrast, has shown promise in a phase II study. We compared doxorubicin to PIAF in patients with unresectable HCC in a phase III trial. Methods: Patients with histologically confirmed unresectable HCC were randomly assigned to receive either doxorubicin or PIAF every 3 weeks, for up to six cycles. The primary endpoint was overall survival, and secondary endpoints were response rate and toxicity. Survival differences were calculated using the Kaplan-Meier method. Treatment groups were compared for differences in the incidence of adverse events using chi-square tests. All statistical tests were two-sided. Results: The median survival of the doxorubicin and PIAF groups was 6.83 months (95% confidence [CI] = 4.80 to 9.56) and 8.67 months (95% CI = 6.36 to 12.00), respectively ( P = 0.83). The hazard ratio for death from any cause in the PIAF compared with the doxorubicin groups was 0.97 (95% CI = 0.71 to 1.32). Eighty-six of the 94 patients receiving doxorubicin and 91 of the 94 receiving PIAF were assessable for response. The overall response rates in the doxorubicin and PIAF groups were 10.5% (95% CI = 3.9% to 16.9%) and 20.9% (95% CI = 12.5% to 29.2%), respectively. Neutropenia, thrombocytopenia, and hypokalemia were statistically significantly more common in patients treated with PIAF than in patients treated with doxorubicin. Conclusion: Although patients on PIAF had a higher overall response rate and better survival than patients on doxorubicin, the differences were not statistically significant. PIAF was also associated with increased treatment-related toxicity. The prognosis of patients with unresectable HCC remains poor.

1 November 2000 in Journal of Medical Virology
Verified
Journal Article
Closed access
PDF file
WYWinnie Yeo
Winnie Yeo
CCChan Chan
Chan Chan
SZSheng Zhong
Sheng Zhong
WHWing M. Ho
Wing M. Ho
JSJoyce L. Steinberg
Joyce L. Steinberg
PJPhilip J. Johnson
Philip J. Johnson

1 April 2010 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
VWVincent Wai-Sun Wong
Vincent Wai-Sun Wong
SCStephen L. Chan
Stephen L. Chan
FMFrankie Mo
Frankie Mo
TCTung-Ching Chan
Tung-Ching Chan
HLHerbert Ho-Fung Loong
Herbert Ho-Fung Loong
TMTony Shu-Kam Mok
Tony Shu-Kam Mok
Purpose: Hepatitis B virus (HBV) infection is an important etiology for hepatocellular carcinoma (HCC). We aim to develop a simple clinical score in predicting the risk of HCC among HBV carriers. Patients and Methods: We first evaluated 1,005 patients and found that the following five factors independently predicted HCC development: age, albumin, bilirubin, HBV DNA, and cirrhosis. These variables were used to construct a prediction score ranging from 0 to 44.5. The score was validated in another prospective cohort of 424 patients. Results: During a median follow-up of 10 years, 105 patients (10.%) in the training cohort and 45 patients (10.6%) in the validation cohort developed HCC. Cutoff values of 5 and 20 best discriminated HCC risk. By applying the cutoff value of 5, the score excluded future HCC development with high accuracy (negative predictive value = 97.8% and 97.3% in the training and validation cohorts, respectively). In the validation cohort, the 5-year HCC-free survival rates were 98.3%, 90.5%, and 78.9% in the low-, medium-, and high-risk groups, respectively. The hazard ratios for HCC in the medium- and high-risk groups were 12.8 and 14.6, respectively. Conclusion: A simple prediction score constructed from routine clinical and laboratory parameters is accurate in predicting HCC development in HBV carriers. Future prospective validation is warranted.