Yuki Haga

Dr. Yuki Haga


Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

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

Representative Publications

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Verified
Journal Article
Open access
PDF file
Tatsuo KandaTatsuo Kanda
Tatsuo Kanda
SYShin Yasui
Shin Yasui
MNMasato Nakamura
Masato Nakamura
ESEiichiro Suzuki
Eiichiro Suzuki
MAMakoto Arai
Makoto Arai
OYOSAMU YOKOSUKA
OSAMU YOKOSUKA
The aim of this study was to characterize the treatment response and serious adverse events of ledipasvir plus sofosbuvir therapies in Japanese patients infected with hepatitis C virus (HCV) genotype 1 (GT1). This retrospective study analyzed 240 Japanese HCV GT1 patients treated for 12 weeks with 90 mg of ledipasvir plus 400 mg of sofosbuvir daily. Sustained virological response at 12 weeks post-treatment (SVR12) was achieved in 236 of 240 (98.3%) patients. Among treatment-naïve patients, SVR12 was achieved in 136 of 138 (98.6%) patients, and among treatment-experienced patients, SVR12 was achieved in 100 of 102 (98.0%) patients. In patients previously treated with peginterferon plus ribavirin with various HCV NS3/4A inhibitors, 100% SVR rates (25/25) were achieved. Two relapsers had HCV NS5A resistance-associated variants (RAVs), but no HCV NS5B-S282 was observed after they relapsed. We experienced two patients with cardiac events during treatment. In conclusion, combination of ledipasvir plus sofosbuvir for 12 weeks is a potential therapy for HCV GT1 patients. Caution is needed for HCV NS5A RAVs, which were selected by HCV NS5A inhibitors and cardiac adverse events.

5 May 2017 in Cancers
Verified
Journal Article
Open access
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Tatsuo KandaTatsuo Kanda
Tatsuo Kanda
KTKoji Takahashi
Koji Takahashi
MNMasato Nakamura
Masato Nakamura
Shingo NakamotoShingo Nakamoto
Shingo Nakamoto
SWShuang Wu
Shuang Wu
OYOSAMU YOKOSUKA
OSAMU YOKOSUKA
Hepatocellular carcinoma (HCC) is a male-dominant disease with poor prognosis. Sorafenib is the only approved systemic chemotherapeutic drug for patients with advanced HCC. Previous studies have shown that androgen and androgen receptor (AR) are involved in human hepatocarcinogenesis and the development of HCC. Here, we discuss the recent data on AR and HCC, and the combination of sorafenib and inhibitors of AR for advanced-HCC patients. Androgen-dependent and androgen-independent AR activation exist in human hepatocarcinogenesis. AR could directly control hepatocarcinogenesis and regulate the innate immune system to influence HCC progression. Combination of sorafenib with AR inhibitors might represent a potential treatment for patients with advanced HCC.

9 May 2017 in Biology
Verified
Journal Article
Open access
PDF file
Tatsuo KandaTatsuo Kanda
Tatsuo Kanda
MNMasato Nakamura
Masato Nakamura
SYShin Yasui
Shin Yasui
YHYuki Haga
Yuki Haga
ATAkinobu Tawada
Akinobu Tawada
OYOSAMU YOKOSUKA
OSAMU YOKOSUKA
The aim of this study was to characterize the treatment response and tolerability of sofosbuvir plus ribavirin therapies in Japanese patients infected with hepatitis C virus (HCV) genotype (GT)-2. This retrospective study analyzed 114 Japanese HCV GT-2 patients treated for 12 weeks with 400 mg of sofosbuvir plus weight-based ribavirin daily. This treatment led to higher sustained virologic response at 12-weeks post-treatment (SVR12) rates in both treatment-naïve and treatment-experienced patients. The efficacy of this treatment in compensated cirrhotics was the same as that in patients with chronic hepatitis. HCV GT-2a infection and lower estimated glomerular filtration rates (eGFR) tended to be associated with SVR12. Of 114 patients, 113 completed the combination of sofosbuvir plus ribavirin for 12 weeks. Seven patients without SVR12 did not have HCV NS5B-S282 mutations. The overall SVR12 rate was 90.4% (103 of 114). More effective therapeutic options with less adverse events are desired to achieve higher SVR rates in HCV GT-2 Japanese patients.

1 May 2017 in Biochemical and Biophysical Research Communications
Verified
Journal Article
Closed access
YHYuki Haga
Yuki Haga
Tatsuo KandaTatsuo Kanda
Tatsuo Kanda
Shingo NakamotoShingo Nakamoto
Shingo Nakamoto
MNMasato Nakamura
Masato Nakamura
RSReina Sasaki
Reina Sasaki
OYOSAMU YOKOSUKA
OSAMU YOKOSUKA

17 September 2015 in Diseases
Verified
Journal Article
Open access
PDF file
Tatsuo KandaTatsuo Kanda
Tatsuo Kanda
SWShuang Wu
Shuang Wu
RSReina Sasaki
Reina Sasaki
MNMasato Nakamura
Masato Nakamura
YHYuki Haga
Yuki Haga
OYOSAMU YOKOSUKA
OSAMU YOKOSUKA
Hepatitis B virus (HBV) infection, a cause of hepatocellular carcinoma (HCC), remains a serious global health concern. HCC development and human hepatocarcinogenesis are associated with hepatic inflammation caused by host interferons and cytokines. This article focused on the association between the HBV core protein, which is one of the HBV-encoding proteins, and cytokine production. The HBV core protein induced the production of interferons and cytokines in human hepatoma cells and in a mouse model. These factors may be responsible for persistent HBV infection and hepatocarcinogenesis. Inhibitors of programmed death (PD)-1 and HBV core and therapeutic vaccines including HBV core might be useful for the treatment of patients with chronic HBV infection. Inhibitors of HBV core, which is important for hepatic inflammation, could be helpful in preventing the progression of liver diseases in HBV-infected patients.

14 December 2016 in Diseases
Verified
Journal Article
Open access
PDF file
YHYuki Haga
Yuki Haga
Tatsuo KandaTatsuo Kanda
Tatsuo Kanda
RSReina Sasaki
Reina Sasaki
MNMasato Nakamura
Masato Nakamura
KTKoji Takahashi
Koji Takahashi
OYOsamu Yokosuka
Osamu Yokosuka
Background: Wisteria floribunda agglutinin-positive human Mac-2-binding protein (WFA(+)-M2BP) is a novel non-invasive marker of liver fibrosis. The goal of the study was to investigate whether the novel serum biomarker WFA(+)-M2BP or other non-invasive markers are useful for the prediction of liver fibrosis in patients with nonalcoholic steatohepatitis (NASH), autoimmune hepatitis (AIH), and primary biliary cholangitis (PBC). Methods: We examined a significant correlation between serum WFA(+)-M2BP levels and histological staging of fibrosis in several chronic liver diseases, such as NASH, AIH, and PBC. Results: WFA(+)-M2BP could not predict hepatic fibrosis in these patients. We also showed that the level of platelet counts is a useful predictor of hepatic fibrosis progression in patients with NASH, AIH, and PBC. There was a significant correlation between staging of fibrosis and grading of activity in the liver in all groups except for AIH patients. Conclusion: Platelet counts can predict hepatic fibrosis in patients with NASH, AIH, or PBC. Clinicians should pay attention to the grading of liver activity in the use of WFA(+)-M2BP.