Skip to content

Home Search Authors Pakistan News Saved

SciRah

SciRah does not host or store research papers. Results come live from free, official scholarly APIs, and every paper links back to its original source.

Data sources

OpenAlex
Semantic Scholar
Crossref
CORE
arXiv
PubMed

Privacy policy Terms of service

K. Tozuka · SciRah

Researcher profile · Semantic Scholar

K. Tozuka

Share profile

K. Tozuka — researcher profile on SciRah

h-index: 11
Works: 38
Citations: 321

Most-cited papers

Power of PgR expression as a prognostic factor for ER-positive/HER2-negative breast cancer patients at intermediate risk classified by the Ki67 labeling index
S. Kurozumi, H. Matsumoto, Yuji Hayashi, K. Tozuka +5 more
2017BMC Cancer50 citations Open access
Semantic Scholar
Cross-cultural comparison of breast cancer patients’ Quality of Life in the Netherlands and Japan
M. Fischer, K. Inoue, Ayako Matsuda, J. Kroep +12 more
2017Breast Cancer Research and Treatment33 citations Open access
Semantic Scholar
True Recurrences and New Primary Tumors Have Different Clinical Features in Invasive Breast Cancer Patients with Ipsilateral Breast Tumor Relapse After Breast‐Conserving Treatment
Takashi Yoshida, H. Takei, M. Kurosumi, Jun Ninomiya +7 more
2010The Breast Journal31 citations Open access
Semantic Scholar
Current trends of sentinel lymph node biopsy for breast cancer —A surgeon’s perspective
H. Takei, M. Kurosumi, Takashi Yoshida, Jun Ninomiya +7 more
2007Breast Cancer29 citations
Semantic Scholar
Impact of combining the progesterone receptor and preoperative endocrine prognostic index (PEPI) as a prognostic factor after neoadjuvant endocrine therapy using aromatase inhibitors in postmenopausal ER positive and HER2 negative breast cancer
S. Kurozumi, H. Matsumoto, K. Inoue, K. Tozuka +6 more
2018PLoS ONE27 citations Open access
Semantic Scholar
Axillary lymph node dissection can be avoided in women with breast cancer with intraoperative, false-negative sentinel lymph node biopsies
H. Takei, M. Kurosumi, Takashi Yoshida, Y. Ishikawa +10 more
2010Breast Cancer27 citations
Semantic Scholar
Alterations of the genes involved in the PI3K and estrogen-receptor pathways influence outcome in human epidermal growth factor receptor 2-positive and hormone receptor-positive breast cancer patients treated with trastuzumab-containing neoadjuvant chemotherapy
M. Takada, T. Higuchi, K. Tozuka, H. Takei +9 more
2013BMC Cancer25 citations Open access
Semantic Scholar
Topoisomerase II alpha expression and the Ki-67 labeling index correlate with prognostic factors in estrogen receptor-positive and human epidermal growth factor type-2-negative breast cancer
H. Tokiniwa, J. Horiguchi, D. Takata, M. Kikuchi +7 more
2012Breast Cancer25 citations
Semantic Scholar
BRCA1 alterations with additional defects in DNA damage response genes may confer chemoresistance to BRCA‐like breast cancers treated with neoadjuvant chemotherapy
M. Takada, S. Nagai, Masayuki Haruta, R. Sugino +10 more
2017Genes, Chromosomes and Cancer15 citations
Semantic Scholar
Ipsilateral breast tumor relapse after breast conserving surgery in women with breast cancer.
Takashi Yoshida, H. Takei, M. Kurosumi, Jun Ninomiya +6 more
2009Breast13 citations Open access
Semantic Scholar
Papillary lesions of the breast diagnosed using core needle biopsies.
H. Tokiniwa, J. Horiguchi, D. Takata, M. Kikuchi +7 more
2011Experimental and Therapeutic Medicine11 citations Open access
Semantic Scholar
Pathological complete response and prognosis in patients receiving neoadjuvant paclitaxel and trastuzumab with and without anthracyclines for stage II and III, HER2-positive operable breast cancer: a single-institute experience.
J. Horiguchi, T. Oyama, D. Takata, N. Rokutanda +7 more
2011Anticancer Research8 citations
Semantic Scholar
Positive sentinel lymph node biopsy predicts the number of metastatic axillary nodes of breast cancer.
H. Takei, M. Kurosumi, Takashi Yoshida, Jun Ninomiya +7 more
2009Breast6 citations Open access
Semantic Scholar
Deregulation of protein phosphatase 2A inhibitor SET is associated with malignant progression in breast cancer
K. Tozuka, P. Wongsirisin, S. Nagai, Yuta Kobayashi +7 more
2021Scientific Reports5 citations Open access
Semantic Scholar
Collagen gel droplet-embedded culture-drug sensitivity test and Ki67 expression in estrogen receptor-positive and HER2-negative breast cancer.
K. Tozuka, J. Horiguchi, D. Takata, N. Rokutanda +6 more
2013Molecular and clinical oncology5 citations Open access
Semantic Scholar
Alterations of the genes involved in the PI3K and estrogen-receptor pathways influence outcome in human epidermal growth factor receptor 2-positive and hormone receptor-positive breast cancer patients treated with trastuzumab-containing neoadjuvant chemotherapy
M. Takada, T. Higuchi, K. Tozuka, H. Takei +9 more
2013BMC Cancer4 citations Open access
Semantic Scholar
Abstract P3-06-29: Change of circulating tumor cells before and after neoadjuvant chemotherapy in patients with primary breast cancer
J. Horiguchi, D. Takata, N. Rokutanda, R. Nagaoka +6 more
20123 citations
Semantic Scholar
Romosozumab for cancer treatment-induced bone loss in postmenopausal women with hormone receptor-positive breast cancer: a case series
Shohei Tsujino, Hirotaka Koyanagi, C. Sawamura, K. Tozuka +1 more
2026Archives of Osteoporosis2 citations
Semantic Scholar
Abstract P2-05-07: Comparison of hormone receptor and HER-2 expression in primary breast cancers and sentinel lymph node metastases
N. Rokutanda, J. Horiguchi, D. Takata, R. Nagaoka +5 more
20122 citations
Semantic Scholar
Abstract P4-14-17: Prognostic value of tumor-infiltrating lymphocytes in residual tumors after neoadjuvant chemotherapy concomitant with trastuzumab for HER2-positive breast cancer
S. Kurozumi, K. Inoue, H. Matsumoto, Yuji Hayashi +9 more
20161 citations
Semantic Scholar
Values of tumor-infiltrating lymphocytes (TILs), CD8+ TILs, and PDL-1 for predicting pathological complete response and prognosis in HER2-positive breast cancer receiving neoadjuvant chemotherapy with trastuzumab.
S. Kurozumi, K. Inoue, M. Kurosumi, H. Matsumoto +8 more
20161 citations
Semantic Scholar
Author Response to "Interpreting romosozumab for cancer treatment-induced bone loss: measurement, missing data, and surveillance".
Hirotaka Koyanagi, Shohei Tsujino, Chigusa Sawamura, K. Tozuka +1 more
2026Osteoporosis International0 citations
Semantic Scholar
Correction: Romosozumab for cancer treatment-induced bone loss in postmenopausal women with hormone receptor-positive breast cancer: a case series
Shohei Tsujino, Hirotaka Koyanagi, Chigusa Sawamura, K. Tozuka +1 more
2026Archives of Osteoporosis0 citations
Semantic Scholar
Cultural Adaptation and Preliminary Validation of Adherence Questionnaires for Japanese Patients with Breast Cancer: A Pilot Study
A. Matsuda, K. Tozuka, Manami Momiyama, Kenichi Inoue +4 more
2025Patient Preference and Adherence0 citations Open access
Semantic Scholar
Current Status of the Cooperation within an Oncofertility Team for Younger Patients with Breast Cancer who Underwent Surgery at Saitama Cancer Center
H. Matsumoto, K. Tozuka, T. Hirakata, K. Kubo +1 more
2022The Kitakanto Medical Journal0 citations Open access
Semantic Scholar
Abstract P5-12-17: Prognostic and predictive value of serum level of vascular endothelial growth factor-A in metastatic breast cancer patients treated with bevacizumab plus paclitaxel
K. Tozuka, S. Nagai, H. Matsumoto, Yuji Hayashi +7 more
2019Poster Session Abstracts0 citations
Semantic Scholar
Abstract P2-01-08: Enumeration of heterogeneous circulating tumor cells (CTCs) using size-based method in early, and metastatic, breast cancer patients
K. Tozuka, S. Nagai, K. Kubo, K. Komatsu +8 more
20180 citations
Semantic Scholar
Abstract P4-13-11: A complication analysis between complete and partial tissue expander coverage using autologous flaps in cases of immediate breast reconstruction
K. Kubo, A. Hamahata, K. Tozuka, M. Tsuboi +5 more
20180 citations
Semantic Scholar
Abstract P2-02-20: Enumeration of heterogeneous circulating tumor cells (CTCs) in metastatic breast cancer patients based on size and deformability
K. Tozuka, S. Nagai, K. Inoue, K. Komatsu +4 more
20160 citations
Semantic Scholar
Impact of combining PgR score and original preoperative endocrine prognostic index (PEPI) score as a prognostic factor of neoadjuvant endocrine therapy using exemestane in postmenopausal ER-positive/HER2-negative breast cancer.
S. Kurozumi, H. Matsumoto, K. Tozuka, Yuji Hayashi +6 more
20150 citations
Semantic Scholar
Abstract P2-04-10: Utility of simultaneous HER2 protein and gene assessment for the evaluation of discrepancy and intratumoral heterogeneity of HER2 status and the prediction of prognosis in invasive breast cancer using the gene-protein assay (GPA)
S. Kurozumi, M. Padilla, M. Kurosumi, H. Matsumoto +10 more
20150 citations
Semantic Scholar
JUVENILE FIBROADENOMA IN A 13-YEAR-OLD FEMALE
K. Tozuka, J. Horiguchi, A. Sato, Hideaki Tokiniwa +2 more
20130 citations Open access
Semantic Scholar
Author's response to reviews Title: Alterations of the genes involved in the PI3K and estrogen-receptor pathways influence outcome in human epidermal growth factor receptor 2-positive and hormone receptor-positive breast cancer patients treated with trastuzumab-containing neoadjuvant chemotherapy Au
M. Takada, T. Higuchi, K. Tozuka, H. Takei +9 more
20130 citations
Semantic Scholar
288 Changes in Estrogen Receptor (ER), Progesterone Receptor (PgR) and HER2/neu Status During Primary Systemic Chemotherapy in Breast Cancer
K. Tozuka, J. Horiguchi, D. Takata, N. Rokutanda +5 more
20120 citations
Semantic Scholar
429 Circulating Tumour Cells Before and After Neoadjuvant Chemotherapy in Patients with Primary Breast Cancer
J. Horiguchi, D. Takata, N. Rokutanda, R. Nagaoka +6 more
20120 citations
Semantic Scholar
289 Comparison of HER-2 and Hormone Receptor Expression in Primary Breast Cancers and Metastases
N. Rokutanda, J. Horiguchi, M. Kikuchi, D. Takata +6 more
20120 citations
Semantic Scholar
604 The Management of Papillary Lesions of the Breast Diagnosed Using Core Needle Biopsies
Hideaki Tokiniwa, J. Horiguchi, D. Takata, N. Rokutanda +6 more
20120 citations
Semantic Scholar
Comparative study of hormone receptor status and HER2 expression between primary and recurrent breast cancer.
Nana Rokutanda, J. Horiguchi, D. Takata, R. Nagaoka +5 more
2011Journal of Clinical Oncology0 citations
Semantic Scholar
ultrasonog-Papillary lesions of the breast diagnosed using core needle biopsies
H. Tokiniwa, Jun Horiguchi, D. Takata, M. Kikuchi +7 more
0 citations
Semantic Scholar

Frequent co-authors

Invite them to SciRah by sharing their profile.

K. Inoue×19
Invite
K. Inoue — researcher profile on SciRah
J. Horiguchi×18
Invite
J. Horiguchi — researcher profile on SciRah
Yuji Hayashi×15
Invite
Yuji Hayashi — researcher profile on SciRah
I. Takeyoshi×15
Invite
I. Takeyoshi — researcher profile on SciRah

×15

Invite

M. Kurosumi — researcher profile on SciRah

Invite

D. Takata — researcher profile on SciRah

H. Matsumoto×12

Invite

H. Matsumoto — researcher profile on SciRah

Invite

R. Nagaoka — researcher profile on SciRah

Invite

S. Nagai — researcher profile on SciRah

N. Rokutanda×11

Invite

N. Rokutanda — researcher profile on SciRah

Invite

A. Sato — researcher profile on SciRah

Invite

H. Takei — researcher profile on SciRah