Cancer Research and Treatment

Jai Min Ryu

5 Articles

Breast cancer

Real World Evidence of Neoadjuvant Docetaxel/Carboplatin/Trastuzumab/Pertuzumab (TCHP) in Patients with HER2-Positive Early or Locally Advanced Breast Cancer: A Single-Institutional Clinical Experience: Ji-Yeon Kim, Seok Jin Nam, Jeong Eon Lee, Jonghan Yu, Byung Joo Chae, Se Kyung Lee, Jai Min Ryu, Jin Seok Ahn, Young-Hyuck Im, Seok Won Kim, Yeon Hee Park; Cancer Res Treat. 2022;54(4):1091-1098. Published online January 10, 2022; DOI: https://doi.org/10.4143/crt.2021.901

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Purpose
Docetaxel/carboplatin/trastuzumab/pertuzumab (TCHP) regimen is frequently used to treat early and locally advanced human epidermal growth factor receptor 2 (HER2)–positive breast cancer (BC) in neoadjuvant setting. However, large-scaled real-world evidence did not exist.
Materials and Methods
We retrospectively reviewed medical records of patients with early or locally advanced HER2-positive BC who underwent neoadjuvant TCHP followed by curative surgery at Samsung Medical Center between January 2016 and August 2020.
Results
Of 447 patients, 316 (70.7%) received breast-conserving surgery and 131 (29.3%) received total mastectomy. In terms of neoadjuvant chemotherapy response, pathologic complete response (pCR) and residual cancer burden (RCB) score were analyzed. The rate of pCR was 64% a class of RCB 0 was observed in 65% of cases, RCB class I in 12%, RCB class II in 14%, and RCB class III in 2%. The 3-year event-free survival rate was 90.6%, BC with pCR occurred in 92.8%, and BC with non-pCR in 86.3% (p=0.016). In terms of distant metastasis, the 3-year distant recurrence-free survival rate was 93.5%; BC with pCR occurred in 95.9% and BC with non-pCR in 89.2% (p=0.013). Mucositis (85.2%), pain (83.2%), and diarrhea (70.5%) were the most common non-hematologic adverse events. In terms of hematologic adverse events, anemia (89.9%) was the most commonly observed adverse events followed by thrombocytopenia (29.8%).
Conclusion
Neoadjuvant TCHP therapy had a pCR rate of 64% and a 3-year event-free survival of 90% in real world experience. In terms of toxicity profile, anemia was frequently observed and adequate management including occasional transfusion was required.

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De-escalation of neoadjuvant taxane and carboplatin therapy in HER2-positive breast cancer with dual HER2 blockade: a multicenter real-world experience in China
Song Wu, Li Bian, Haibo Wang, Shaohua Zhang, Tao Wang, Zhigang Yu, Jianbin Li, Feng Li, Kun Wang, Zefei Jiang
World Journal of Surgical Oncology.2024;[Epub] CrossRef
Distinct ER and PR expression patterns significantly affect the clinical outcomes of early HER2-positive breast cancer: A real-world analysis of 871 patients treated with neoadjuvant therapy
Haizhu Chen, Xiujuan Gui, Ziwei Zhou, Fengxi Su, Chang Gong, Shunrong Li, Wei Wu, Nanyan Rao, Qiang Liu, Herui Yao
The Breast.2024; 75: 103733. CrossRef
Impact of adding pertuzumab to trastuzumab plus chemotherapy in neoadjuvant treatment of HER2 positive breast cancer patients: a multicenter real-life HER2PATH study
Ahmet Bilici, Omer Fatih Olmez, Muhammed Ali Kaplan, Berna Oksuzoglu, Ahmet Sezer, Nuri Karadurmus, Erdem Cubukcu, Mehmet Ali Nahit Sendur, Sercan Aksoy, Dilek Erdem, Gul Basaran, Burcu Cakar, Abdallah T. M. Shbair, Cagatay Arslan, Ahmet Taner Sumbul, Sem
Acta Oncologica.2023; 62(4): 381. CrossRef
Pathologic Complete Response Achieved in Early-Stage HER2-Positive Breast Cancer After Neoadjuvant Therapy With Trastuzumab and Chemotherapy vs. Trastuzumab, Chemotherapy, and Pertuzumab: A Systematic Review and Meta-Analysis of Clinical Trials
Faizan Fazal, Muhammad Nauman Bashir, Maham Leeza Adil, Usama Tanveer, Mansoor Ahmed, Taha Zahid Chaudhry, Ali Ahmad Ijaz, Muhammad Haider
Cureus.2023;[Epub] CrossRef
Trends of axillary surgery in breast cancer patients with axillary lymph node metastasis: a comprehensive single-center retrospective study
Yeon Jin Kim, Hye Jin Kim, Soo Yeon Chung, Se Kyung Lee, Byung Joo Chae, Jonghan Yu, Jeong Eon Lee, Seok Won Kim, Seok Jin Nam, Jai Min Ryu
Annals of Surgical Treatment and Research.2023; 105(1): 10. CrossRef
Anthracyclines versus No Anthracyclines in the Neoadjuvant Strategy for HER2+ Breast Cancer: Real-World Evidence
Inês Soares de Pinho, Paulo Luz, Lucy Alves, Raquel Lopes-Brás, Vanessa Patel, Miguel Esperança-Martins, Lisa Gonçalves, Ritas Freitas, Diana Simão, Maria Roldán Galnares, Isabel Fernandes, Silvia Artacho Criado, Salvador Gamez Casado, Jose Baena Cañada,
Clinical Drug Investigation.2023; 43(9): 691. CrossRef
Benefit of postoperative regional nodal irradiation in patients receiving preoperative systemic therapy with docetaxel/carboplatin/trastuzumab/pertuzumab for HER2-positive breast cancer
Nalee Kim, Ji-Yeon Kim, Won Park, Won Kyung Cho, Tae Gyu Kim, Young-Hyuck Im, Jin Seok Ahn, Jeong Eon Lee, Seok Jin Nam, Seok Won Kim, Jonghan Yu, Byung Joo Chae, Sei Kyung Lee, Jai-Min Ryu, Yeon Hee Park, Haeyoung Kim
The Breast.2023; 72: 103594. CrossRef
Response Rate and Safety of a Neoadjuvant Pertuzumab, Atezolizumab, Docetaxel, and Trastuzumab Regimen for Patients With ERBB2-Positive Stage II/III Breast Cancer
Hee Kyung Ahn, Sung Hoon Sim, Koung Jin Suh, Min Hwan Kim, Jae Ho Jeong, Ji-Yeon Kim, Dae-Won Lee, Jin-Hee Ahn, Heejung Chae, Kyung-Hun Lee, Jee Hyun Kim, Keun Seok Lee, Joo Hyuk Sohn, Yoon-La Choi, Seock-Ah Im, Kyung Hae Jung, Yeon Hee Park
JAMA Oncology.2022; 8(9): 1271. CrossRef

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Clinicopathological Characterization of Double Heterozygosity for BRCA1 and BRCA2 Variants in Korean Breast Cancer Patients: Yoon Ju Bang, Won Kyung Kwon, Seok Jin Nam, Seok Won Kim, Byung-Joo Chae, Se Kyung Lee, Jai Min Ryu, Jong-Won Kim, Jonghan Yu, Jeong Eon Lee; Cancer Res Treat. 2022;54(3):827-833. Published online October 13, 2021; DOI: https://doi.org/10.4143/crt.2021.791

Abstract PDF Supplementary Material PubReader ePub

Purpose
Double heterozygosity (DH) for BRCA1 and BRCA2 variant is very rare with only a few cases reported, and most those in Caucasians. In this article, we present seven unrelated cases of DH for BRCA1/2 identified from a single institution in Korea, and describe the characteristics and phenotype of DH individuals compared to those with a single BRCA variant.
Materials and Methods
This study included 27,678 patients diagnosed with breast cancer and surgically treated at Samsung Medical Center (SMC) between January 2008 and June 2020. In total, 4,215 high-risk breast cancer patients were tested for the BRCA1/2 genes, and electronic medical records from 456 cases with pathogenic/likely pathogenic variants (PVs/LPVs) were reviewed.
Results
A younger mean age at diagnosis was associated with DH than a single variant of BRCA1/2. More triple-negative breast cancer (TNBC) and higher nuclear and histologic grade cancer occurred with DH than BRCA2 variant. All 7 cases of DH were unrelated, and their mutation combinations were different. There were no Ashkenazi founder variants detected.
Conclusion
We suggest that patients with DH for BRCA1/2 variants develop breast cancer at a younger age, but the histopathologic features are similar to those of BRCA1.

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Cost-effectiveness of talazoparib for patients with germline BRCA1/2 mutated HER2-negative advanced breast cancer in China and the US
Junjie Pan, Ning Ren, Lanqi Ren, YiBei Yang, Qiaoping Xu
Scientific Reports.2024;[Epub] CrossRef
Characteristics of Chinese breast cancer patients with double heterozygosity for BRCA1 and BRCA2 germline pathogenic variants
Song Wen, Meng Zhang, Jiuan Chen, Li Hu, Jie Sun, Lu Yao, Ye Xu, Juan Zhang, Yuntao Xie
Breast Cancer Research and Treatment.2024; 208(1): 155. CrossRef
Discovery of BRCA1/BRCA2 founder variants by haplotype analysis
Won Kyung Kwon, Hyeok-Jae Jang, Jeong Eon Lee, Yeon Hee Park, Jai Min Ryu, Jonghan Yu, Ja-Hyun Jang, Jong-Won Kim
Cancer Genetics.2022; 266-267: 19. CrossRef

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Validation of Korean Version of the COmprehensive Score for financial Toxicity (COST) Among Breast Cancer Survivors: Sungkeun Shim, Danbee Kang, Nayeon Kim, Gayeon Han, Jihyun Lim, Hyunsoo Kim, Jeonghyun Park, Mankyung Lee, Jeong Eon Lee, Seok Won Kim, Jonghan Yu, Byung Joo Chae, Jai Min Ryu, Seok Jin Nam, Se Kyung Lee, Juhee Cho; Cancer Res Treat. 2022;54(3):834-841. Published online October 13, 2021; DOI: https://doi.org/10.4143/crt.2021.784

Abstract PDF Supplementary Material PubReader ePub

Purpose
Little is known about the impact of financial toxicity in disease-free breast cancer survivors. We aim to validate the COmprehensive Score for financial Toxicity in Korean (COST-K) and evaluate financial toxicity among disease-free breast cancer survivors.
Materials and Methods
We conducted linguistic validation following a standardized methodology recommended by Functional Assessment of Chronic Illness Therapy multilingual translation (FACITtrans). For psychometric validation, we conducted a cross-sectional survey with 4,297 disease-free breast cancer survivors at a tertiary hospital in Seoul, Korea between November 2018 and April 2019. Survivors were asked to complete the COST-K and European Organization for Research and Treatment of Cancer Quality of Life Core 30 (EORTC QLQ-C30) questionnaires. The test-retest reliability, internal consistency, and validity of the COST-K were assessed using standard scale construction techniques.
Results
The COST-K demonstrated good internal consistency, with a Cronbach’s α of 0.81. The test-retest analysis revealed an intraclass correlation coefficient of 0.78. The COST-K had moderate correlation (r=–0.60) with the financial difficulty item of the EORTC QLQ-C30 and week correlation with the items on acute and chronic symptom burdens (nausea/vomiting, –0.18; constipation, –0.14; diarrhea, –0.14), showing good convergent and divergent validity. The median COST-K was 27 (range, 0 to 44; mean±standard deivation [SD], 27.1±7.5) and about 30% and 5% of cancer survivors experienced mild and severe financial toxicity, respectively. Younger age, lower education, lower household income was associated with higher financial toxicity.
Conclusion
The COST-K is a valid and reliable instrument for measuring financial toxicity in disease-free breast cancer survivors. Considering its impact on the health-related quality of life, more studies need to be conducted to evaluate financial toxicity in cancer survivors and design interventions.

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Severity of Financial Toxicity for Patients Receiving Palliative Radiation Therapy
Jeremy P. Harris, Eric Ku, Garrett Harada, Sophie Hsu, Elaine Chiao, Pranathi Rao, Erin Healy, Misako Nagasaka, Jessica Humphreys, Michael A. Hoyt
American Journal of Hospice and Palliative Medicine®.2024; 41(6): 592. CrossRef
Financial Toxicity in Radiation Oncology: Impact for Our Patients and for Practicing Radiation Oncologists
Victoria S. Wu, Xinglei Shen, Janet de Moor, Fumiko Chino, Jonathan Klein
Advances in Radiation Oncology.2024; 9(3): 101419. CrossRef
Measures of financial toxicity in cancer survivors: a systematic review
L. B. Thomy, M. Crichton, L. Jones, P. M. Yates, N. H. Hart, L. G. Collins, R. J. Chan
Supportive Care in Cancer.2024;[Epub] CrossRef
Validation of the COmprehensive Score for Financial Toxicity (COST) in Vietnamese patients with cancer
Binh Thang Tran, Dinh Duong Le, Thanh Gia Nguyen, Minh Tu Nguyen, Minh Hanh Nguyen, Cao Khoa Dang, Dinh Trung Tran, Le An Pham
PLOS ONE.2024; 19(6): e0306339. CrossRef
Comprehensive Score for Financial Toxicity and Health-Related Quality of Life in Patients With Cancer and Survivors: A Systematic Review and Meta-Analysis
Stevanus Pangestu, Fanni Rencz
Value in Health.2023; 26(2): 300. CrossRef
Association between financial toxicity and health-related quality of life of patients with gynecologic cancer
Yusuke Kajimoto, Kazunori Honda, Shiro Suzuki, Masahiko Mori, Hirofumi Tsubouchi, Kohshiro Nakao, Anri Azuma, Takashi Shibutani, Shoji Nagao, Takahiro Koyanagi, Izumi Kohara, Shuko Tamaki, Midori Yabuki, Lida Teng, Keiichi Fujiwara, Ataru Igarashi
International Journal of Clinical Oncology.2023; 28(3): 454. CrossRef
Financial Toxicity Following Cancer in a Middle-Income Country with a Pluralistic Health System: Validation of the COST Questionnaire
Veni V. Sakti, Mahmoud Danaee, Cheng-Har Yip, Ros S. A. Bustamam, Marniza Saad, Gin Gin Gan, Jerome Tan, Yueh Ni Lim, Flora L.T. Chong, Murallitharan Munisamy, Farahida Mohd Farid, Boon Lui Sew, Yek-Ching Kong, Nishalini Muniandy, Nirmala Bhoo-Pathy
Cancer Care Research Online.2023; 3(3): e044. CrossRef
Financial Toxicity Among Breast Cancer Patients
Yi Kuang, Xiaoyi Yuan, Zheng Zhu, Weijie Xing
Cancer Nursing.2023;[Epub] CrossRef
Heterogeneity of financial toxicity and associated risk factors for older cancer survivors in China
Mingzhu Su, Siqi Liu, Li Liu, Fang Wang, Jiahui Lao, Xiaojie Sun
iScience.2023; 26(10): 107768. CrossRef
Evaluation of financial toxicity and associated factors in female patients with breast cancer: a systematic review and meta-analysis
Yusuf Çeli̇k, Sevilay Şenol Çeli̇k, Seda Sarıköse, Hande Nur Arslan
Supportive Care in Cancer.2023;[Epub] CrossRef
Validity of the COmprehensive Score for financial Toxicity (COST) in patients with gynecologic cancer
Yusuke Kajimoto, Takashi Shibutani, Shoji Nagao, Satoshi Yamaguchi, Shiro Suzuki, Masahiko Mori, Hirofumi Tsubouchi, Kohshiro Nakao, Anri Azuma, Takahiro Koyanagi, Izumi Kohara, Shuko Tamaki, Midori Yabuki, Lida Teng, Kazunori Honda, Ataru Igarashi
International Journal of Gynecologic Cancer.2022; : ijgc-2022-003410. CrossRef

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Clinicopathological Features of Patients with the BRCA1 c.5339T>C (p.Leu1780Pro) Variant: Hyung Seok Park, Jai Min Ryu, Ji Soo Park, Seock-Ah Im, So-Youn Jung, Eun-Kyu Kim, Woo-Chan Park, Jun Won Min, Jeeyeon Lee, Ji Young You, Jeong Eon Lee, Sung-Won Kim; Cancer Res Treat. 2020;52(3):680-688. Published online January 28, 2020; DOI: https://doi.org/10.4143/crt.2019.351

Abstract PDF Supplementary Material PubReader ePub

Purpose
Recent studies revealed the BRCA1 c.5339T>C, p.Leu1780Pro variant (L1780P) is highly suggested as a likely pathogenic. The aim of this study was to evaluate clinicopathologic features of L1780P with breast cancer (BC) using multicenter data from Korea to reinforce the evidence as a pathogenic mutation and to compare L1780P and other BRCA1/2mutations using Korean Hereditary Breast Cancer (KOHBRA) study data.
Materials and Methods
The data of 54 BC patients with L1780P variant from 10 institutions were collected and the clinicopathologic characteristics of the patients were reviewed. The hereditary breast and/or ovarian cancer–related characteristics of the L1780P variant were compared to those of BC patients in the KOHBRA study.
Results
The median age of all patients was 38 years, and 75.9% of cases showed triple-negative breast cancer. Comparison of cases with L1780P to carriers from the KOHBRA study revealed that the L1780P patients group was more likely to have family history (FHx) of ovarian cancer (OC) (24.1% vs. 19.6% vs. 11.2%, p < 0.001 and p=0.001) and a personal history of OC (16.7% vs. 2.9% vs. 1.3%, p=0.003 and p=0.001) without significant difference in FHx of BC and bilateral BC. The cumulative risk of contralateral BC at 10 years after diagnosis was 31.9%, while the cumulative risk of OC at 50 years of age was 20.0%. Patients with L1780P showed similar features with BRCA1 carriers and showed higher penetrance of OC than patients with other BRCA1 mutations.
Conclusion
L1780P should be considered as a pathogenic mutation. Risk-reducing salpingo-oophorectomy is highly recommended for women with L1780P.

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Whole Exome-Wide Association Identifies Rare Variants in GALNT9 Associated with Middle Eastern Papillary Thyroid Carcinoma Risk
Rong Bu, Abdul K. Siraj, Saud Azam, Kaleem Iqbal, Zeeshan Qadri, Maha Al-Rasheed, Saif S. Al-Sobhi, Fouad Al-Dayel, Khawla S. Al-Kuraya
Cancers.2023; 15(17): 4235. CrossRef
Feasibility of targeted cascade genetic testing in the family members of BRCA1/2 gene pathogenic variant/likely pathogenic variant carriers
Jeeyeon Lee, Ji Yeon Ham, Ho Yong Park, Jin Hyang Jung, Wan Wook Kim, Byeongju Kang, Yee Soo Chae, Soo Jung Lee, In Hee Lee, Nan Young Lee
Scientific Reports.2022;[Epub] CrossRef
Molecular Characterization of BRCA1 c.5339T>C Missense Mutation in DNA Damage Response of Triple-Negative Breast Cancer
Jeong Dong Lee, Won-Ji Ryu, Hyun Ju Han, Tae Yeong Kim, Min Hwan Kim, Joohyuk Sohn
Cancers.2022; 14(10): 2405. CrossRef
Discovery of BRCA1/BRCA2 founder variants by haplotype analysis
Won Kyung Kwon, Hyeok-Jae Jang, Jeong Eon Lee, Yeon Hee Park, Jai Min Ryu, Jonghan Yu, Ja-Hyun Jang, Jong-Won Kim
Cancer Genetics.2022; 266-267: 19. CrossRef
Local Laboratory Testing of Germline BRCA Mutations vs. Myriad: A Single-Institution Experience in Korea
Joohyun Hong, Jiyun Lee, Minsuk Kwon, Ji-Yeon Kim, Jong-Won Kim, Jin Seok Ahn, Young-Hyuck Im, Yeon Hee Park
Diagnostics.2021; 11(2): 370. CrossRef
Analysis of BRCA1/2 variants of unknown significance in the prospective Korean Hereditary Breast Cancer study
Joo Heung Kim, Sunggyun Park, Hyung Seok Park, Ji Soo Park, Seung-Tae Lee, Sung-Won Kim, Jong Won Lee, Min Hyuk Lee, Sue K. Park, Woo-Chul Noh, Doo Ho Choi, Wonshik Han, Sung Hoo Jung
Scientific Reports.2021;[Epub] CrossRef
A Population-Based Analysis of BRCA1/2 Genes and Associated Breast and Ovarian Cancer Risk in Korean Patients: A Multicenter Cohort Study
Kyung-Sun Park, Woochang Lee, Moon-Woo Seong, Sun-Young Kong, Kyung-A Lee, Jung-Sook Ha, Eun-Hae Cho, Sung-Hee Han, Inho Park, Jong-Won Kim
Cancers.2021; 13(9): 2192. CrossRef

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Endoxifen Concentration Is Associated with Recurrence-Free Survival in Hormone-Sensitive Breast Cancer Patients: Beomki Lee, Seok Jin Nam, Seok Won Kim, Jonghan Yu, Byung-Joo Chae, Se Kyung Lee, Jai Min Ryu, Jeong Eon Lee, Soo-Youn Lee; Received December 5, 2023 Accepted June 16, 2024 Published online June 18, 2024; DOI: https://doi.org/10.4143/crt.2023.1285 [Epub ahead of print]

Abstract PDF PubReader ePub: Purpose
The metabolism of tamoxifen is influenced by various cytochrome p450 enzymes, including CYP2D6 and CYP2C19, leading to variations in the levels of endoxifen, even with the same tamoxifen dose. However, the clinical significance of endoxifen for the prognosis of breast cancer patients remains controversial. This study aimed to elucidate the relevance of endoxifen level to recurrence-free survival censored with tamoxifen discontinuation (RFSt), representing the RFS for tamoxifen itself, of breast cancer patients and determine a suitable cutoff for prognostication.
Materials and Methods
The study included 478 breast cancer patients. Tamoxifen and its metabolites, including endoxifen, were measured using liquid chromatography-tandem mass spectrometry. An optimal cutoff was determined with maximally selected rank statistics. Survival analysis and Cox regression were conducted based on this cutoff.
Results
An endoxifen level of 21.00 ng/mL was the optimal cutoff for prognostication. Survival analysis revealed a statistically significant difference in RFSt between the low endoxifen group (≤ 21.00 ng/mL) and the high endoxifen group (> 21.00 ng/mL) (log-rank test, p=0.032). The 10-year probability of RFSt was 83.2% (95% confidence interval [CI], 77.0 to 89.9) and 88.3% (95% CI, 83.3 to 93.5) in the low and high endoxifen groups, respectively. Multivariable Cox proportional hazards regression indicated endoxifen concentration as a significant factor associated with prognosis.
Conclusion
Endoxifen could serve as a marker for appropriate tamoxifen treatment with a cutoff of 21.00 ng/mL. Based on this cutoff, therapeutic drug monitoring would benefit patients displaying suboptimal endoxifen concentrations.

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