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Original Article
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International Academy of Cytology standardized reporting of breast fine-needle aspiration cytology with cyto-histopathological correlation of breast carcinoma
Shweta Pai
J Pathol Transl Med. 2024;58(5):241-248.   Published online September 13, 2024
DOI: https://doi.org/10.4132/jptm.2024.07.14
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AbstractAbstract PDF
Background
The International Academy of Cytology (IAC) has developed a standardized approach for reporting the findings of breast fine-needle aspiration cytology (FNAC). Accordingly, there are five chief categories of breast lesions, C1 (insufficient material), C2 (benign), C3 (atypical), C4 (suspicious), and C5 (malignant). The prognostication and management of breast carcinoma can be performed readily on the basis of this classification system. The aim of this study was to classify various breast lesions into one of the above-named categories and to further grade the C5 lesions specifically using the Robinson system. The latter grades were then correlated with modified Scarff-Bloom-Richardson (SBR) grades.
Methods
This retrospective study was undertaken in the pathology department of a hospital located in the urban part of the city of Bangalore. All FNAC procedures performed on breast lumps spanning the year 2020 were included in the study.
Results
A total of 205 breast lesions was classified according to the IAC guidelines into C1 (6 cases, 2.9%), C2 (151 cases, 73.7%), C3 (13 cases, 6.3%), C4 (5 cases, 2.5%), and C5 (30 cases, 14.6%) groups. The C5 cases were further graded using Robinson’s system. The latter showed a significant correlation with the SBR system (concordance=83.3%, Spearman correlation=0.746, Kendall’s tau-b=0.736, kappa=0.661, standard error=0.095, p≤.001).
Conclusions
A standardized approach for FNAC reporting of breast lesions, as advocated for by the IAC, improves the quality and clarity of the reports and assures diagnostic reproducibility on a global scale. Further, the cytological grading of C5 lesions provides reliable cyto-prognostic scores that can help assess a tumor’s aggressiveness and predict its histological grade.
Case Study
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Metastatic choroidal melanoma in the breast: a case report and review of the literature
Loay Abudalu, Vinisha Malhotra, Nabila Nasir, Sami Titi
J Pathol Transl Med. 2023;57(4):238-241.   Published online July 11, 2023
DOI: https://doi.org/10.4132/jptm.2023.06.07
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AbstractAbstract PDF
The breast is an unusual site for metastases, accounting for less than 2% of malignant breast lesions but include those from malignant melanomas, carcinomas, sarcomas, and lymphomas from various organs. We diagnosed a very rare case of metastatic choroidal melanoma for a 67-year-old female who presented with a right breast lump and who had been previously diagnosed with choroidal melanoma-monosomy 3 in 2017. To the best of our knowledge, only five such cases have been published so far, with one in a male patient.
Original Articles
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Fatty acid synthetase expression in triple-negative breast cancer
Jin Hee Park, Hye Seung Han, So Dug Lim, Wook Youn Kim, Kyoung Sik Park, Young Bum Yoo, Seung Eun Lee, Wan-Seop Kim
J Pathol Transl Med. 2022;56(2):73-80.   Published online January 21, 2022
DOI: https://doi.org/10.4132/jptm.2021.10.27
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  • 189 Download
  • 7 Web of Science
  • 7 Crossref
AbstractAbstract PDF
Background
Triple-negative breast cancer (TNBC) has a relatively poor prognosis. Research has identified potential metabolic targets, including fatty acid metabolism, in TNBC. The absence of effective target therapies for TNBC led to exploration of the role of fatty acid synthetase (FASN) as a potential target for TNBC therapy. Here, we analyzed the expression of FASN, a representative lipid metabolism–related protein, and investigated the association between FASN expression and Ki-67 and the programmed death ligand 1 (PD-L1) biomarkers in TNBC.
Methods
Immunohistochemical expression of FASN was analyzed in 166 patients with TNBC. For analytical purposes, patients with 0–1+ FASN staining were grouped as low-grade FASN and patients with 2–3+ FASN staining as high-grade FASN.
Results
FASN expression was observed in 47.1% of TNBC patients. Low and high expression of FASN was identified in 75.9% and 24.1%, respectively, and no statistically significant difference was found in T category, N category, American Joint Committee on Cancer stage, or recurrence rate between the low and high-FASN expression groups. Ki-67 proliferation level was significantly different between the low and high-FASN expression groups. FASN expression was significantly related to Ki-67 as the level increased. There was no significant difference in PD-L1 positivity between the low- and high-FASN expression groups.
Conclusions
We identified FASN expression in 166 TNBC patients. The Ki-67 proliferation index was positively correlated with FASN level, indicating higher proliferation activity as FASN increases. However, there was no statistical association with PD-L1 SP142, the currently FDA-approved assay, or FASN expression level.

Citations

Citations to this article as recorded by  
  • Protein biomarkers for diagnosis of breast cancer
    Emeka Eze Joshua Iweala, Doris Nnenna Amuji, Faith Chinasaokwu Nnaji
    Scientific African.2024; 25: e02308.     CrossRef
  • Microarray analysis points to LMNB1 and JUN as potential target genes for predicting metastasis promotion by etoposide in colorectal cancer
    Jiafei Liu, Hongjie Yang, Peng Li, Yuanda Zhou, Zhichun Zhang, Qingsheng Zeng, Xipeng Zhang, Yi Sun
    Scientific Reports.2024;[Epub]     CrossRef
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    Baiheng Zhu, Kehao Xiang, Tanghua Li, Xin Li, Fujun Shi
    Cell Communication and Signaling.2024;[Epub]     CrossRef
  • NFYA promotes malignant behavior of triple-negative breast cancer in mice through the regulation of lipid metabolism
    Nobuhiro Okada, Chihiro Ueki, Masahiro Shimazaki, Goki Tsujimoto, Susumu Kohno, Hayato Muranaka, Kiyotsugu Yoshikawa, Chiaki Takahashi
    Communications Biology.2023;[Epub]     CrossRef
  • Role of EGFR and FASN in breast cancer progression
    Suchi Chaturvedi, Mainak Biswas, Sushabhan Sadhukhan, Avinash Sonawane
    Journal of Cell Communication and Signaling.2023; 17(4): 1249.     CrossRef
  • Bioinformatics Method Was Used to Analyze the Highly Expressed Gene FAM83A of Breast Cancer in Young Women
    Yongzhe Tang, Hao Wang, Qi He, Yuanyuan Chen, Jie Wang, Fahd Abd Algalil
    Applied Bionics and Biomechanics.2022; 2022: 1.     CrossRef
  • NCAPH promotes proliferation as well as motility of breast cancer cells by activating the PI3K/AKT pathway
    Ting Zhang, Peng Li, Wanying Guo, Qipeng Liu, Weiqiang Qiao, Miao Deng
    Physiology International.2022;[Epub]     CrossRef
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Potential of AKT2 expression as a predictor of lymph-node metastasis in invasive breast carcinoma of no special type
Primariadewi Rustamadji, Elvan Wiyarta, Kristina Anna Bethania, Kusmardi Kusmardi
J Pathol Transl Med. 2021;55(4):271-278.   Published online June 14, 2021
DOI: https://doi.org/10.4132/jptm.2021.04.26
  • 3,513 View
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  • 3 Web of Science
  • 8 Crossref
AbstractAbstract PDF
Background
Invasive breast carcinoma of no special type (IBC-NST) is the most common type of breast cancer and mainly causes regional lymph-node metastasis (LNM). We investigated the potential for AKT2 expression as a predictive biomarker for LNM in IBC-NST.
Methods
Forty-eight paraffin blocks containing IBC-NST primary tumors were divided into two groups based on presence or absence of LNM. Age, tumor grade, tumor size, lymphovascular invasion (LVI), and AKT expression were assessed. AKT2 expression was assessed based on immunohistochemical staining, while other data were collected from archives.
Results
Multiple logistic regression results showed that AKT2 expression and LVI were significantly associated with LNM (odds ratio [OR], 5.32; 95% confidence interval [CI], 1.42 to 19.93 and OR, 4.46; 95% CI, 1.17 to 16.97, respectively). AKT2 expression was able to discriminate against LNM (area under the receiver operating characteristic, 0.799 ± 0.063; 95% CI, 0.676 to 0.921) at an H-score cutoff of 104.62 (83.3% sensitivity, 62.5% specificity).
Conclusions
AKT2 expression has potential as a predictor of LNM in IBC-NST. The H-score cutoff for AKT2 expression can be used as a classification guide in future studies.

Citations

Citations to this article as recorded by  
  • Association of Src with Nottingham Prognostic Index in Breast Cancer: Implications for Breast Cancer Prognostication
    Primariadewi Rustamadji, Elvan Wiyarta
    Journal of Nature and Science of Medicine.2024; 7(2): 90.     CrossRef
  • CD4+ Tumor-infiltrating Lymphocytes in Neoadjuvant Chemotherapy-treated Invasive Breast Cancer of No Special Type
    Primariadewi Rustamadji, Elvan Wiyarta, Meike Pramono, Sinta Chaira Maulanisa
    Journal of Nature and Science of Medicine.2024; 7(3): 179.     CrossRef
  • Potential of AKNA as a Predictive Biomarker for Ovarian Cancer and Its Relationship to Tumor Grading
    P Rustamadji, E Wiyarta, M Miftahuzzakiyah, D Sukmawati, DA Suryandari, R Kodariah
    Nigerian Journal of Clinical Practice.2024; 27(9): 1089.     CrossRef
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    Primariadewi Rustamadji, Elvan Wiyarta, Ineke Anggreani
    Open Access Macedonian Journal of Medical Sciences.2022; 10(B): 1440.     CrossRef
  • Effect of Omega-3-Rich Fish Oil on TNF-  Expression in Mice's Colonic Tissue Induced with Azoxymethane (AOM) and Dextran Sodium Sulphate (DSS)
    Elvan Wiyarta, Kusmardi Kusmardi, Yurnadi Hanafi Midoen
    Research Journal of Pharmacy and Technology.2022; : 3179.     CrossRef
  • The potential of lunasin extract for the prevention of breast cancer progression by upregulating E-Cadherin and inhibiting ICAM-1
    Kusmardi Kusmardi, Elvan Wiyarta, Numlil Khaira Rusdi, Andi Muh. Maulana, Ari Estuningtyas, Hadi Sunaryo
    F1000Research.2021; 10: 902.     CrossRef
  • CD44 Variant Exon 6 Isoform Expression as a Potential Predictor of Lymph Node Metastasis in Invasive Breast Carcinoma of No Special Type
    Primariadewi Rustamadji, Elvan Wiyarta, Kristina A. Bethania, Rakesh Sathish Nair
    International Journal of Breast Cancer.2021; 2021: 1.     CrossRef
  • Correlation between CD 34 and CD 68 expression in placental malaria with maternal anemia
    Primariadewi Rustamadji, Muhammad Takbir, Puspita Eka Wuyung, Kusmardi Kusmardi, Elvan Wiyarta
    Tropical Parasitology.2021; 11(2): 92.     CrossRef
Review
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Standardized pathology report for breast cancer
Soo Youn Cho, So Yeon Park, Young Kyung Bae, Jee Yeon Kim, Eun Kyung Kim, Woo Gyeong Kim, Youngmee Kwon, Ahwon Lee, Hee Jin Lee, Ji Shin Lee, Jee Young Park, Gyungyub Gong, Hye Kyoung Yoon
J Pathol Transl Med. 2021;55(1):1-15.   Published online January 11, 2021
DOI: https://doi.org/10.4132/jptm.2020.11.20
  • 9,037 View
  • 626 Download
  • 6 Web of Science
  • 2 Crossref
AbstractAbstract PDFSupplementary Material
Given the recent advances in management and understanding of breast cancer, a standardized pathology report reflecting these changes is critical. To meet this need, the Breast Pathology Study Group of the Korean Society of Pathologists has developed a standardized pathology reporting format for breast cancer, consisting of ‘standard data elements,’ ‘conditional data elements,’ and a biomarker report form. The ‘standard data elements’ consist of the basic pathologic features used for prognostication, while other factors related to prognosis or diagnosis are described in the ‘conditional data elements.’ In addition to standard data elements, all recommended issues are also presented. We expect that this standardized pathology report for breast cancer will improve diagnostic concordance and communication between pathologists and clinicians, as well as between pathologists inter-institutionally.

Citations

Citations to this article as recorded by  
  • Residual pure intralymphatic carcinoma component only (lymphovascular tumor emboli without invasive carcinoma) after neoadjuvant chemotherapy is associated with poor outcome: Not pathologic complete response
    Hyunwoo Lee, Yunjeong Jang, Yoon Ah Cho, Eun Yoon Cho
    Human Pathology.2024; 145: 1.     CrossRef
  • Sentinel lymph node biopsy in patients with ductal carcinomain situ: systematic review and meta-analysis
    Matthew G. Davey, Colm O’Flaherty, Eoin F. Cleere, Aoife Nohilly, James Phelan, Evan Ronane, Aoife J. Lowery, Michael J. Kerin
    BJS Open.2022;[Epub]     CrossRef
Original Article
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Automated immunohistochemical assessment ability to evaluate estrogen and progesterone receptor status compared with quantitative reverse transcription-polymerase chain reaction in breast carcinoma patients
Taesung Jeon, Aeree Kim, Chungyeul Kim
J Pathol Transl Med. 2021;55(1):33-42.   Published online December 3, 2020
DOI: https://doi.org/10.4132/jptm.2020.09.29
  • 7,799 View
  • 204 Download
  • 6 Web of Science
  • 5 Crossref
AbstractAbstract PDF
Background
This study aimed to investigate the capability of an automated immunohistochemical (IHC) evaluation of hormonal receptor status in breast cancer patients compared to a well-validated quantitative reverse transcription–polymerase chain reaction (RT-qPCR) method.
Methods
This study included 93 invasive breast carcinoma cases that had both standard IHC assay and Oncotype Dx assay results. The same paraffin blocks on which Oncotype Dx assay had been performed were selected. Estrogen receptor (ER) and progesterone receptor (PR) receptor status were evaluated through IHC stains using SP1 monoclonal antibody for ER, and 1E2 monoclonal antibody for PR. All ER and PR immunostained slides were scanned, and invasive tumor areas were marked. Using the QuantCenter image analyzer provided by 3DHISTECH, IHC staining of hormone receptors was measured and converted to histochemical scores (H scores). Pearson correlation coefficients were calculated between Oncotype Dx hormone receptor scores and H scores, and between Oncotype Dx scores and Allred scores.
Results
H scores measured by an automated imaging system showed high concordance with RT-qPCR scores. ER concordance was 98.9% (92/93), and PR concordance was 91.4% (85/93). The correlation magnitude between automated H scores and RT-qPCR scores was high and comparable to those of Allred scores (for ER, 0.51 vs. 0.37 [p=.121], for PR, 0.70 vs. 0.72 [p=.39]).
Conclusions
Automated H scores showed a high concordance with quantitative mRNA expression levels measured by RT-qPCR.

Citations

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Reviews
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Imaging features of breast cancer molecular subtypes: state of the art
Nariya Cho
J Pathol Transl Med. 2021;55(1):16-25.   Published online November 9, 2020
DOI: https://doi.org/10.4132/jptm.2020.09.03
  • 48,842 View
  • 321 Download
  • 15 Web of Science
  • 14 Crossref
AbstractAbstract PDF
Characterization of breast cancer molecular subtypes has been the standard of care for breast cancer management. We aimed to provide a review of imaging features of breast cancer molecular subtypes for the field of precision medicine. We also provide an update on the recent progress in precision medicine for breast cancer, implications for imaging, and recent observations in longitudinal functional imaging with radiomics.

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Article image
Clinicopathological characteristics of BRCA-associated breast cancer in Asian patients
Eun-Kyu Kim, So Yeon Park, Sung-Won Kim
J Pathol Transl Med. 2020;54(4):265-275.   Published online May 14, 2020
DOI: https://doi.org/10.4132/jptm.2020.04.07
  • 6,925 View
  • 236 Download
  • 12 Web of Science
  • 12 Crossref
AbstractAbstract PDF
BRCA1/2 germline mutations account for the majority of hereditary breast cancers. Since the identification of the BRCA genes, several attempts have been made to define the clinicopathological characteristics of BRCA-associated breast cancer in comparison with sporadic breast cancer. Asians constitute 60% of the world population, and although the incidence of breast cancer in Asia remains low compared to the West, breast cancer is the most prevalent female cancer in the region. The epidemiological aspects of breast cancer are different between Asians and Caucasians. Asian patients present with breast cancer at a younger age than Western patients. The contributions of BRCA1/2 mutations to breast cancer incidence are expected to differ between Asians and Caucasians, and the different genetic backgrounds among races are likely to influence the breast cancer phenotypes. However, most large-scale studies on the clinicopathological characteristics of BRCA-associated breast cancer have been on Western patients, while studies on Asian populations were small and sporadic. In this review, we provide an overview of the clinical and pathological characteristics of BRCA-associated breast cancer, incorporating findings on Asian patients.

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Original Articles
Article image
Clinicopathologic characteristics of HER2-positive pure mucinous carcinoma of the breast
Yunjeong Jang, Hera Jung, Han-Na Kim, Youjeong Seo, Emad Alsharif, Seok Jin Nam, Seok Won Kim, Jeong Eon Lee, Yeon Hee Park, Eun Yoon Cho, Soo Youn Cho
J Pathol Transl Med. 2020;54(1):95-102.   Published online November 13, 2019
DOI: https://doi.org/10.4132/jptm.2019.10.24
  • 7,583 View
  • 274 Download
  • 19 Web of Science
  • 18 Crossref
AbstractAbstract PDF
Background
Pure mucinous carcinoma (PMC) is a rare type of breast cancer, estimated to represent 2% of invasive breast cancer. PMC is typically positive for estrogen receptors (ER) and progesterone receptors (PR) and negative for human epidermal growth factor receptor 2 (HER2). The clinicopathologic characteristics of HER2-positive PMC have not been investigated.
Methods
Pathology archives were searched for PMC diagnosed from January 1999 to April 2018. Clinicopathologic data and microscopic findings were reviewed and compared between HER2-positive PMC and HER2-negative PMC. We also analyzed the differences in disease-free survival (DFS) and overall survival according to clinicopathologic parameters including HER2 status in overall PMC cases.
Results
There were 21 HER2-positive cases (4.8%) in 438 PMCs. The average tumor size of HER2-positive PMC was 32.21 mm (± 26.55). Lymph node metastasis was present in seven cases. Compared to HER2-negative PMC, HER2-positive PMC presented with a more advanced T category (p < .001), more frequent lymph node metastasis (p = .009), and a higher nuclear and histologic grade (p < .001). Microscopically, signet ring cells were frequently observed in HER2-positive PMC (p < .001), whereas a micropapillary pattern was more frequent in HER2-negative PMC (p = .012). HER2-positive PMC was more frequently negative for ER (33.3% vs. 1.2%) and PR (28.6% vs. 7.2%) than HER2-negative PMC and showed a high Ki-67 labeling index. During follow-up, distant metastasis and recurrence developed in three HER2-positive PMC patients. Multivariate analysis revealed that only HER2-positivity and lymph node status were significantly associated with DFS.
Conclusions
Our results suggest that HER2-positive PMC is a more aggressive subgroup of PMC. HER2 positivity should be considered for adequate management of PMC.

Citations

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  • Poor response of HER2-positive mucinous carcinomas of breast to neoadjuvant HER2-targeted therapy: A study of four cases
    Min Han, Daniel Schmolze, Javier A. Arias-Stella, Christina H. Wei, Joanne Mortimer, Fang Fan
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Article image
Analysis of the molecular subtypes of preoperative core needle biopsy and surgical specimens in invasive breast cancer
Ye Sul Jeong, Jun Kang, Jieun Lee, Tae-Kyung Yoo, Sung Hun Kim, Ahwon Lee
J Pathol Transl Med. 2020;54(1):87-94.   Published online November 13, 2019
DOI: https://doi.org/10.4132/jptm.2019.10.14
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AbstractAbstract PDF
Background
Accurate molecular classification of breast core needle biopsy (CNB) tissue is important for determining neoadjuvant systemic therapies for invasive breast cancer. The researchers aimed to evaluate the concordance rate (CR) of molecular subtypes between CNBs and surgical specimens.
Methods
This study was conducted with invasive breast cancer patients who underwent surgery after CNB at Seoul St. Mary’s Hospital between December 2014 and December 2017. Estrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2), and Ki67 were analyzed using immunohistochemistry. ER and PR were evaluated by Allred score (0–8). HER2 was graded from 0 to +3, and all 2+ cases were reflex tested with silver in situ hybridization. The labeling index of Ki67 was counted by either manual scoring or digital image analysis. Molecular subtypes were classified using the above surrogate markers.
Results
In total, 629 patients were evaluated. The CRs of ER, PR, HER2, and Ki67 were 96.5% (kappa, 0.883; p<.001), 93.0% (kappa, 0.824; p<.001), 99.7% (kappa, 0.988; p<.001), and 78.7% (kappa, 0.577; p<.001), respectively. Digital image analysis of Ki67 in CNB showed better concordance with Ki67 in surgical specimens (CR, 82.3%; kappa, 0.639 for digital image analysis vs. CR, 76.2%; kappa, 0.534 for manual counting). The CRs of luminal A, luminal B, HER2, and triple negative types were 89.0%, 70.0%, 82.9%, and 77.2%, respectively.
Conclusions
CNB was reasonably accurate for determining ER, PR, HER2, Ki67, and molecular subtypes. Using digital image analysis for Ki67 in CNB produced more accurate molecular classifications.

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Association between p53 Expression and Amount of Tumor-Infiltrating Lymphocytes in Triple-Negative Breast Cancer
Miseon Lee, In Ah Park, Sun-Hee Heo, Young-Ae Kim, Gyungyub Gong, Hee Jin Lee
J Pathol Transl Med. 2019;53(3):180-187.   Published online March 11, 2019
DOI: https://doi.org/10.4132/jptm.2019.02.08
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AbstractAbstract PDF
Background
Most triple-negative breast cancers (TNBCs) have a high histologic grade, are associated with high endoplasmic stress, and possess a high frequency of TP53 mutations. TP53 missense mutations lead to the production of mutant p53 protein and usually show high levels of p53 protein expression. Tumor-infiltrating lymphocytes (TILs) accumulate as part of the anti-tumor immune response and have a strong prognostic and predictive significance in TNBC. We aimed to elucidate the association between p53 expression and the amount of TILs in TNBC.
Methods
In 678 TNBC patients, we evaluated TIL levels and expression of endoplasmic stress molecules. Immunohistochemical examination of p53 protein expression was categorized into three groups: no, low, and high expression.
Results
No, low, and high p53 expression was identified in 44.1% (n = 299), 20.1% (n = 136), and 35.8% (n = 243) of patients, respectively. Patients with high p53 expression showed high histologic grade (p < .001), high TIL levels (p = .009), and high expression of endoplasmic reticulum stress-associated molecules (p-eIF2a, p = .013; XBP1, p = .007), compared to patients with low p53 expression. There was no significant difference in disease-free (p = .406) or overall survival rates (p = .444) among the three p53 expression groups.
Conclusions
High p53 expression is associated with increased expression of endoplasmic reticulum stress molecules and TIL influx.

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Uterine Malignant Mixed Müllerian Tumors Following Treatment with Selective Estrogen Receptor Modulators in Patients with Breast Cancer: A Report of 13 Cases and Their Clinicopathologic Characteristics
Byung-Kwan Jeong, Chang O. Sung, Kyu-Rae Kim
J Pathol Transl Med. 2019;53(1):31-39.   Published online December 18, 2018
DOI: https://doi.org/10.4132/jptm.2018.11.16
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AbstractAbstract PDF
Background
Breast cancer treatment with selective estrogen receptor modulators (SERMs) increasesthe incidence of uterine malignant mixed Müllerian tumors (uMMMTs). We examine clinicopathologiccharacteristics and prognosis of SERM-associated uMMMTs (S-uMMMTs) and discusspossible pathogenetic mechanisms.
Methods
Among 28,104 patients with breast cancer, clinicopathologicfeatures and incidence of uMMMT were compared between patients who underwentSERM treatment and those who did not. Of 92 uMMMT cases that occurred during the same period,incidence, dose, and duration of SERM treatment, as well as overall survival rate, were comparedfor patients with breast cancer who underwent SERM treatment and those who did not (S-uMMMTvs NS-uMMMT) and for patients without breast cancer (de novo-uMMMT). Histopathologicalfindings and immunophenotypes for myogenin, desmin, p53, WT-1, estrogen receptor (ER) α, ERβ,progesterone receptor, and GATA-3 were compared between S-uMMMT and de novo-uMMMT.
Results
The incidence of S-uMMMT was significantly higher than that of NS-uMMMT (6.35-fold).All patients with SERM were postmenopausal and received daily 20–40 mg SERM. CumulativeSERM dose ranged from 21.9 to 73.0 g (mean, 46.0) over 39–192 months (mean, 107). Clinicopathologicfeatures, such as International Federation of Gynecology and Obstetrics stage andoverall survival, were not significantly different between patients with S-uMMMT and NS-uMMMTor between patients with S-uMMMT and de novo-uMMMT. All 11 S-uMMMT cases available forimmunostaining exhibited strong overexpression/null expression of p53 protein and significantlyincreased ERβ expression in carcinomatous and sarcomatous components.
Conclusions
SERMtherapy seemingly increases risk of S-uMMMT development; however, clinicopathologic featureswere similar in all uMMMTs from different backgrounds. p53 mutation and increased ERβ expressionmight be involved in the etiology of S-uMMMT.

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Loss of Human Leukocyte Antigen Class I Expression Is Associated with Poor Prognosis in Patients with Advanced Breast Cancer
Hong Sik Park, Uiju Cho, So Young Im, Chang Young Yoo, Ji Han Jung, Young Jin Suh, Hyun Joo Choi
J Pathol Transl Med. 2019;53(2):75-85.   Published online November 14, 2018
DOI: https://doi.org/10.4132/jptm.2018.10.11
  • 6,818 View
  • 184 Download
  • 29 Web of Science
  • 32 Crossref
AbstractAbstract PDF
Background
Human leukocyte antigen class I (HLA-I) molecules play important roles in regulating immune responses. Loss or reduction of HLA-I expression has been shown to be associated with prognosis in several cancers. Regulatory T-cells (Tregs) also play critical functions in immune response regulation. Evaluation of HLA-I expression status by the EMR8-5 antibody and its clinical impact in breast cancer have not been well studied, and its relationship with Tregs remains unclear.
Methods
We evaluated HLA-I expression and Treg infiltration by immunohistochemistry in 465 surgically resected breast cancer samples. We examined the correlation between HLA-I expression and Treg infiltration and clinicopathologic characteristics and survival analyses were performed.
Results
Total loss of HLA-I expression was found in 84 breast cancer samples (18.1%). Univariate survival analysis revealed that loss of HLA-I expression was significantly associated with worse disease-specific survival (DSS) (p = .029). HLA-I was not an independent prognostic factor in the entire patient group, but it was an adverse independent prognostic factor for DSS in patients with advanced disease (stage II–IV) (p = .031). Treg numbers were significantly higher in the intratumoral stroma of HLA-I–positive tumors than in HLA-I–negative tumors (median 6.3 cells/high power field vs 2.1 cells/high power field, p < .001). However, Tregs were not an independent prognostic factor in our cohort.
Conclusions
Our findings suggest that the loss of HLA-I expression is associated with poor prognosis in breast cancer patients, highlighting the role of HLA-I alterations in immune evasion mechanisms of breast cancer. HLA-I could be a promising marker that enables the application of more effective and precise immunotherapies for patients with advanced breast cancer.

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The Prognostic Impact of Synchronous Ipsilateral Multiple Breast Cancer: Survival Outcomes according to the Eighth American Joint Committee on Cancer Staging and Molecular Subtype
Jinah Chu, Hyunsik Bae, Youjeong Seo, Soo Youn Cho, Seok-Hyung Kim, Eun Yoon Cho
J Pathol Transl Med. 2018;52(6):396-403.   Published online October 23, 2018
DOI: https://doi.org/10.4132/jptm.2018.10.03
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AbstractAbstract PDF
Background
In the current American Joint Committee on Cancer staging system of breast cancer, only tumor size determines T-category regardless of whether the tumor is single or multiple. This study evaluated if tumor multiplicity has prognostic value and can be used to subclassify breast cancer.
Methods
We included 5,758 patients with invasive breast cancer who underwent surgery at Samsung Medical Center, Seoul, Korea, from 1995 to 2012.
Results
Patients were divided into two groups according to multiplicity (single, n = 4,744; multiple, n = 1,014). Statistically significant differences in lymph node involvement and lymphatic invasion were found between the two groups (p < .001). Patients with multiple masses tended to have luminal A molecular subtype (p < .001). On Kaplan-Meier survival analysis, patients with multiple masses had significantly poorer disease-free survival (DFS) (p = .016). The prognostic significance of multiplicity was seen in patients with anatomic staging group I and prognostic staging group IA (p = .019 and p = .032, respectively). When targeting patients with T1-2 N0 M0, hormone receptor–positive, and human epidermal growth factor receptor 2 (HER2)–negative cancer, Kaplan-Meier survival analysis also revealed significantly reduced DFS with multiple cancer (p = .031). The multivariate analysis indicated that multiplicity was independently correlated with worse DFS (hazard ratio, 1.23; 95% confidence interval, 1.03 to 1.47; p = .025). The results of this study indicate that tumor multiplicity is frequently found in luminal A subtype, is associated with frequent lymph node metastasis, and is correlated with worse DFS.
Conclusions
Tumor multiplicity has prognostic value and could be used to subclassify invasive breast cancer at early stages. Adjuvant chemotherapy would be necessary for multiple masses of T1–2 N0 M0, hormone-receptor-positive, and HER2-negative cancer.

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High Cytoplasmic CXCR4 Expression Predicts Prolonged Survival in Triple-Negative Breast Cancer Patients Treated with Adjuvant Chemotherapy
Bobae Shim, Min‐Sun Jin, Ji Hye Moon, In Ae Park, Han Suk Ryu
J Pathol Transl Med. 2018;52(6):369-377.   Published online October 1, 2018
DOI: https://doi.org/10.4132/jptm.2018.09.19
  • 12,175 View
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  • 9 Web of Science
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AbstractAbstract PDF
Background
Chemokine receptor CXC chemokine receptor type 4 (CXCR4) and its ligand CXC motif chemokine 12 (CXCL12; stromal cell-derived factor-1) are implicated in tumor growth, metastasis, and tumor cell-microenvironment interaction. A number of studies have reported that increased CXCR4 expression is associated with worse prognosis in triple-negative breast cancer (TNBC), but its prognostic significance has not been studied in TNBC patients treated with adjuvant chemotherapy.
Methods
Two hundred eighty-three TNBC patients who received adjuvant chemotherapy were retrospectively analyzed. Tissue microarray was constructed from formalinfixed, paraffin-embedded tumor tissue and immunohistochemistry for CXCR4 and CXCL12 was performed. Expression of each marker was compared with clinicopathologic characteristics and outcome.
Results
High cytoplasmic CXCR4 expression was associated with younger age (p = .008), higher histologic grade (p = .007) and lower pathologic stage (p = .045), while high CXCL12 expression was related to larger tumor size (p = .045), positive lymph node metastasis (p = .005), and higher pathologic stage (p = .017). The patients with high cytoplasmic CXCR4 experienced lower distant recurrence (p = .006) and better recurrence-free survival (RFS) (log-rank p = .020) after adjuvant chemotherapy. Cytoplasmic CXCR4 expression remained an independent factor of distant recurrence (p = .019) and RFS (p = .038) after multivariate analysis.
Conclusions
High cytoplasmic CXCR4 expression was associated with lower distant recurrence and better RFS in TNBC patients treated with adjuvant chemotherapy. This is the first study to correlate high CXCR4 expression to better TNBC prognosis, and the underlying mechanism needs to be elucidated in further studies.

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