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Tan CF, Wang J, Zhong XR, Dai ZL, Xiang ZZ, Zeng YY, Wei XY, Xu NY, Liu L. Is postmastectomy radiotherapy necessary for breast cancer patients with clinically node-positive downstaging to ypN0 after neoadjuvant chemotherapy? Breast Cancer Res Treat 2024:10.1007/s10549-024-07249-2. [PMID: 38616207 DOI: 10.1007/s10549-024-07249-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/04/2024] [Indexed: 04/16/2024]
Abstract
PURPOSE The significance of postmastectomy radiotherapy (PMRT) in breast cancer patients who initially have clinically node-positive (cN +) status but achieve downstaging to ypN0 following neoadjuvant chemotherapy (NAC) remains uncertain. This study aims to assess the impact of PMRT in this patient subset. METHODS Patients were enrolled from West China Hospital, Sichuan University from 2008 to 2019. Overall survival (OS), Locoregional recurrence-free survival (LRFS), distant metastasis-free survival (DMFS), and breast cancer-specific survival (BCSS) were estimated using the Kaplan-Meier method and assessed with the log-rank test. The impact of PMRT was further analyzed by the Cox proportional hazards model. Propensity score matching (PSM) was performed to reduce the selection bias. RESULTS Of the 333 eligible patients, 189 (56.8%) received PMRT, and 144 (43.2%) did not. At a median follow-up period of 71 months, the five-year LRFS, DMFS, BCSS, and OS rates were 99.1%, 93.4%, 96.4%, and 94.3% for the entire cohort, respectively. Additionally, the 5-year LRFS, DMFS, BCSS, and OS rates were 98.9%, 93.8%, 96.7%, and 94.5% with PMRT and 99.2%, 91.3%, 94.9%, and 92.0% without PMRT, respectively (all p-values not statistically significant). After multivariate analysis, PMRT was not a significant risk factor for any of the endpoints. When further stratified by stage, PMRT did not show any survival benefit for patients with stage II-III diseases. CONCLUSION In the context of comprehensive treatments, PMRT might be exempted in ypN0 breast cancer patients. Further large-scale, randomized controlled studies are required to investigate the significance of PMRT in this patient subset.
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Affiliation(s)
- Chen-Feng Tan
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Jun Wang
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Xiao-Rong Zhong
- Breast Center, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Ze-Lei Dai
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Zhong-Zheng Xiang
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Yuan-Yuan Zeng
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Xiao-Yuan Wei
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Ning-Yue Xu
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Lei Liu
- Division of Head & Neck Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China.
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Wang J, Luo T, Xiang ZZ, He MM, Zeng YY, Yang T, Wei XY, Yu S, Dai ZL, Xu NY, Tan CF, Liu L. Survival and Trends in Annualized Hazard Function by Age at Diagnosis Among Chinese Breast Cancer Patients Aged ≤40 Years: Case Analysis Study. JMIR Public Health Surveill 2023; 9:e47110. [PMID: 37463020 PMCID: PMC10394600 DOI: 10.2196/47110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/19/2023] [Accepted: 06/15/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND Young breast cancer patients are more likely to develop aggressive tumor characteristics and a worse prognosis than older women, and different races and ethnicities have distinct epidemiologies and prognoses. However, few studies have evaluated the clinical biological features and relapse patterns in different age strata of young women in Asia. OBJECTIVE We aimed to explore survival differences and the hazard function in young Chinese patients with breast cancer (BC) by age. METHODS The patients were enrolled from West China Hospital, Sichuan University. The chi-squared test, a Kaplan-Meier analysis, a log-rank test, a Cox multivariate hazards regression model, and a hazard function were applied for data analysis. Locoregional recurrence-free survival (LRFS), distant metastasis-free survival (DMFS), breast cancer-specific survival (BCSS), and overall survival (OS) were defined as end points. RESULTS We included 1928 young BC patients diagnosed between 2008 and 2019. Patients aged 18 to 25, 26 to 30, 31 to 35, and 36 to 40 years accounted for 2.7% (n=53), 11.8% (n=228), 27.7% (n=535), and 57.7% (n=1112) of the patients, respectively. The diagnosis of young BC significantly increased from 2008 to 2019. Five-year LRFS, DMFS, BCSS, and OS for the entire population were 98.3%, 93.4%, 94.4%, and 94%, respectively. Patients aged 18 to 25 years had significantly poorer 5-year LRFS (P<.001), 5-year DMFS (P<.001), 5-year BCSS (P=.04), and 5-year OS (P=.04) than those aged 31 to 35, 26 to 30, and 36 to 40 years. The hazard curves for recurrence and metastasis for the whole cohort continuously increased over the years, while the BC mortality risk peaked at 2 to 3 years and then slowly decreased. When stratified by age, the annualized hazard function for recurrence, metastasis, and BC mortality in different age strata showed significantly different trends, especially for BC mortality. CONCLUSIONS The annual diagnosis of young BC seemed to increase in Chinese patients, and the distinct age strata of young BC patients did not differ in survival outcome or failure pattern. Our results might provide strategies for personalized management of young BC.
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Affiliation(s)
- Jun Wang
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Ting Luo
- Breast Disease Center, Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Zhong-Zheng Xiang
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Ming-Min He
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Yuan-Yuan Zeng
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Tian Yang
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiao-Yuan Wei
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Siting Yu
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Ze-Lei Dai
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Ning-Yue Xu
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Chen-Feng Tan
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
| | - Lei Liu
- Department of Head and Neck Oncology, West China Hospital, Sichuan University, Chengdu, China
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Mao HG, Xu XL, Cao HY, Dong XY, Zou XT, Xu NY, Yin ZZ. H-FABP gene expression and genetic association with meat quality traits in domestic pigeons ( Columba livia). Br Poult Sci 2020; 62:172-179. [PMID: 33174489 DOI: 10.1080/00071668.2020.1839016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
1. H-FABP (heart-type fatty acid-binding protein) is an important fatty acid-binding protein that participates in the metabolism and intracellular transportation of lipids. This study was designed to study the H-FABP gene expression and genetic association with meat quality traits in domestic pigeons.2. The spatio-temporal expression patterns showed that H-FABP was widely expressed in all eleven tissues in birds from hatching to 4 weeks of age, and the expression level in the liver was the highest, and spleen and subcutaneous fat showed relatively high levels at all time points, and increased markedly as squabs became older.3. Nine novel SNPs were found; three of them (g.42 C > T and g.123 C > T in exon 1 and g.3128 C > T in exon 2) were synonymous mutations, and six of them (g.3304 T > C, g.3305 G > A, g.3313A>G, g.3343 C > T, g.3372A>C, g.3410 T > C in exon 3) were located in the 3' untranslated region (UTR). In addition, four haplotypes and six diplotypes were formed and showed weak linkage disequilibrium. Association analysis showed that in the SNP of g.3305 G > A, the AB genotype showed higher (P < 0.05) inosinic acid concentrations in breast muscle than the BB genotype. In the SNP of g.3313A>G, the AA and AB genotypes showed significantly higher (P < 0.01) inosinic acid concentrations than the BB genotype, AA showed the highest intramuscular fat content, and the relative mRNA expression level of the AA genotype was the highest (P < 0.05).4. Association analysis of diplotypes showed no correlation with meat quality traits. Moreover, correlation analysis indicated that the H-FABP mRNA expression level was tightly related to intramuscular fat content (P < 0.01).5. This study suggested that the H-FABP gene may be a candidate gene in marker-assisted selection of pigeons for high-quality meat.
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Affiliation(s)
- H G Mao
- Animal Science College, Zhejiang University, Hangzhou, China
| | - X L Xu
- Animal Science College, Zhejiang University, Hangzhou, China
| | - H Y Cao
- Animal Science College, Zhejiang University, Hangzhou, China
| | - X Y Dong
- Animal Science College, Zhejiang University, Hangzhou, China
| | - X T Zou
- Animal Science College, Zhejiang University, Hangzhou, China
| | - N Y Xu
- Animal Science College, Zhejiang University, Hangzhou, China
| | - Z Z Yin
- Animal Science College, Zhejiang University, Hangzhou, China
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Mao HG, Cao HY, Liu HH, Dong XY, Xu NY, Yin ZZ. Association of ADSL gene polymorphisms with meat quality and carcass traits in domestic pigeons (Columba livia). Br Poult Sci 2018; 59:604-607. [PMID: 29963908 DOI: 10.1080/00071668.2018.1493188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
1. Adenylosuccinate lyase (ADSL) plays an important role in the synthesis of inosine monophosphate (IMP). In this trial, a total of 200 pigeons were sampled and slaughtered. Seven meat quality traits and 11 carcass traits were measured. DNA sequencing was used to detect nucleotide mutations, and associations between ADSL gene polymorphisms and meat quality and carcass traits were analysed. 2. Sequencing results showed that 9 nucleotide mutations were found in the exons of the ADSL gene. All the mutations were synonymous except C13065G, which caused a change in amino acids (Ser to Arg). In addition, two of the detected single nucleotide polymorphisms (SNPs) had significant associations with meat quality and carcass traits. 3. For the C13065G SNP located in exon11, the IMP content of breast muscle in AA and AB genotype was higher than in the BB genotype (P < 0.01). The SNP G10696A located in exon10 was significantly associated with carcass rate, in which AA and AB genotype were higher than the BB genotype (P < 0.01). 4. The results indicated that the ADSL gene has a close association with meat quality and carcass traits in domestic pigeons, and G10696A and C13065G SNPs could be applied as genetic markers in molecular marker-assisted breeding of pigeons.
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Affiliation(s)
- H G Mao
- a Animal Science College, Zhejiang University, Zijingang Campus , Hangzhou , China
| | - H Y Cao
- a Animal Science College, Zhejiang University, Zijingang Campus , Hangzhou , China
| | - H H Liu
- a Animal Science College, Zhejiang University, Zijingang Campus , Hangzhou , China
| | - X Y Dong
- a Animal Science College, Zhejiang University, Zijingang Campus , Hangzhou , China
| | - N Y Xu
- a Animal Science College, Zhejiang University, Zijingang Campus , Hangzhou , China
| | - Z Z Yin
- a Animal Science College, Zhejiang University, Zijingang Campus , Hangzhou , China
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Mao HG, Dong XY, Cao HY, Xu NY, Yin ZZ. Association of DGAT2 gene polymorphisms with carcass and meat quality traits in domestic pigeons (Columba livia). Br Poult Sci 2018; 59:149-153. [PMID: 29207879 DOI: 10.1080/00071668.2017.1413232] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
1. Diacylglycerol acyltransferase (DGAT) plays an important role in the synthesis of triacylglycerol, but its effects on meat quality and carcass composition in pigeons are unclear. In this study, single-nucleotide polymorphisms (SNPs) in the exons of the DGAT2 gene were identified and analysed by using DNA sequencing methods in 200 domestic pigeons (Columba livia). The associations between DGAT2 polymorphisms and carcass and meat quality traits were also analysed. 2. Sequencing results showed that 5 nucleotide mutations were detected in exons 3, 4, 5 and 6 of the DGAT2 gene. The analysis revealed three genotypes (AA, AB and BB) in G18398T and G22484C, in which the AA genotype and A allele had the highest frequency. 3. In the SNP of G18398T located in exon 5, individuals with genotype BB had significantly higher meat quality and lower abdominal fat content than those with AA or AB genotype. In the SNP of G22484C located in exon 6, the genotype AA showed highest carcass trait values, while the genotype BB represented better meat quality, compared to AA and AB genotypes. 4. The results imply that DGAT2 gene has a close relationship with carcass and meat quality traits in pigeons, and the SNPs of G18398T and G22484C can be used as genetic markers for marker-assisted breeding in pigeon.
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Affiliation(s)
- H G Mao
- a Animal Science College , Zhejiang University , Hangzhou , China
| | - X Y Dong
- a Animal Science College , Zhejiang University , Hangzhou , China
| | - H Y Cao
- a Animal Science College , Zhejiang University , Hangzhou , China
| | - N Y Xu
- a Animal Science College , Zhejiang University , Hangzhou , China
| | - Z Z Yin
- a Animal Science College , Zhejiang University , Hangzhou , China
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Peng J, Li YL, Shen YF, Wang Y, Xu NY. Molecular cloning and expression analysis of the GNAS gene in pig and porcine fibroblast cells. Genet Mol Res 2014; 13:5463-73. [PMID: 25078603 DOI: 10.4238/2014.july.24.26] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Alpha subunit of the stimulatory guanine nucleotide-binding protein (GNAS) is a complex imprinted gene. The major product of the GNAS gene is the α-subunit of the guanine nucleotide-binding protein (Gas), which plays a key role in multiple signal transduction pathways. Gas is required for the production of the receptor-stimulated intracellular cyclic adenosine monophosphate (cAMP). It has been demonstrated that an increase in the concentration of the intracellular second messenger cAMP promotes apoptosis in different tumor entities. Mutations of GNAS have also been identified in many tumors. This study aimed to investigate the expression pattern and the apoptosis effect in fibroblast cells for porcine GNAS. The results show that GNAS mRNA was detected in a wide range of tissues, especially in the longissimus dorsi muscle and thyroid gland. The developmental pattern of GNAS mRNA in the thyroid gland of Jinhua pigs was then examined; however, there was no significant difference (P > 0.05) among any of the stages. GNAS gene expression was relatively stable in the thyroid gland during the entire growth and development process. The developmental pattern of GNAS mRNA in the longissimus dorsi muscle was significantly different among the various developmental stages (P < 0.01). GNAS mRNA was strongly expressed at 60 days, 90 days, and 150 days after birth, whereas the expression level was very low during the embryo stages. Target RNA interference of GNAS in porcine fibroblast cells leads to lower mRNA expression of Bcl-2, Fas, and Caspase-3, which are recognized as apoptosis related markers.
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Affiliation(s)
- J Peng
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Y L Li
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Y F Shen
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Y Wang
- College of Mechanics, Taiyuan University of Technology, Taiyuan, China
| | - N Y Xu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
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Chen JF, Dai LH, Xu NY, Xiong YZ, Jiang SW. Assignment of the patatin-like phospholipase domain containing 2 gene (PNPLA2) to porcine chromosome 2p17 with radiation hybrids. Cytogenet Genome Res 2006; 112:342G. [PMID: 16484798 DOI: 10.1159/000089897] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- J F Chen
- Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, PR China
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Affiliation(s)
- X M Fang
- Laboratory of Animal Genetics, College of Animal Science, Zhejiang University, Hangzhou, China
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Li JH, Chu XH, Guo XL, Xu NY. Radiation hybrid mapping of skeletal muscle calcium channel genes CACNB1 and CACNG1 to porcine chromosome 12 and CACNA2D1 to porcine chromosome 9. Anim Genet 2005; 36:358-9. [PMID: 16026353 DOI: 10.1111/j.1365-2052.2005.01308.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J H Li
- Laboratory of Animal Genetics, College of Animal Science, Zhejiang University, Hangzhou 310029, China
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Zhang YS, Du JZ, Xu NY, Wu Y. [The radioimmunoassay of growth hormone and prolactin and its application]. Zhongguo Ying Yong Sheng Li Xue Za Zhi 2001; 17:189-191. [PMID: 21171417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM To set up a highly specific and sensitive double antibody radioimmunoassay (RIA) for determining the contents of growth hormone (GH) and prolactin (PRL) in pituitary and plasma of rats; To study the effects of acute hypoxia on GH and PRL of rats. METHODS We use chloramine-T technique iodinate antigen and choose the equilibration and saturated procedure of RIA to add the preparations. RESULTS Exposed to 7 km-hypoxia for 0.5 h, pituitary GH content increased (P < 0.05) and conversely, plasma GH levels were suppressed (P < 0.05); while the PRL levels in both pituitary and plasma were suppressed (P < 0.01); and there was no significantly difference between 5 km hypoxia groups and control. CONCLUSION We have successfully established the method of radiolabel and double antibody RIA with highly sensitivity; acute hypoxia (7 km) suppressed the secretion of GH and PRL in rats.
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Affiliation(s)
- Y S Zhang
- Department of Neurobiology and Physiology, College of Life Sciences, Zhejiang University, Hangzhou 310027, China
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Xu NY, Thomsen H, Reinsch N, Looft C, Kalm E. [Study of mapping QTLs for milk traits on the German dairy cattle]. Yi Chuan Xue Bao 2000; 27:772-6. [PMID: 11132492 DOI: pmid/11132492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A total of 1,130 bulls belonging to 20 half-sib families of German dairy cattle were genotyped for 229 microsatellite markers on 30 chromosomes. The data were used in an attempt to map quantitative trait loci applying regression as multiple-marker regression. For association analysis with a granddaughter design, the estimated breeding values for 3 milk traits were used: milk production, fat production and protein production. The empirical values of significance thresholds were determined by using a permutation test on the experimental data. Several significant QTLs were found on some chromosomes, especially on the chromosome 14. The results give a strong support for the experiments of Coppieters et al. and Ron et al.
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Affiliation(s)
- N Y Xu
- College of Animal Science, Zhejiang University, Hangzhou 310029, China
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