Publications by authors named "Qu Chang Ouyang"

Purpose: The effects of metronomic chemotherapy plus endocrine therapy have yet to be elucidated through a randomized phase III clinical trial.

Methods: Randomized clinical trials were conducted at 12 centers in China from August 22, 2017, to September 24, 2021, and the final follow-up date was August 25, 2023. Patients with hormone receptor-positive, human epidermal growth factor receptor 2 (HER2)-negative metastatic breast cancer (MBC) who had no previous systemic therapy in the metastatic setting were enrolled.

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Article Synopsis
  • The study analyzed how different molecular subtypes of advanced breast cancer (ABC) relate to the site of distant metastasis in a large cohort of patients from China.
  • Luminal A and Luminal B subtypes were mainly associated with bone metastasis, while HER2-enriched cases showed a higher tendency for liver metastasis, and Triple Negative patients had an increased risk for brain metastasis.
  • The findings highlighted the importance of molecular subtypes in predicting metastasis patterns, which can aid in more personalized treatment and surveillance strategies for managing ABC.
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Background: Several studies have indicated possible associations between age and the prognosis of breast cancer (BC), but limited data are available from hospital-based multicenter studies in China. This study aimed to explore the associations between age at initial diagnosis of BC and the risk of recurrence or metastasis among Chinese women with newly diagnosed advanced breast cancer (ABC) and provide treatment decision support for BC patients of different ages to medical workers.

Methods: The medical records of patients newly diagnosed with ABC were obtained from 21 hospitals in seven geographic regions in China from 2012 to 2014.

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Importance: Patients selected to receive neoadjuvant chemotherapy (NAC) are usually those at higher risk of relapse, and there is a need to find better therapeutic options for these patients.

Objective: To determine the efficacy and safety outcomes for patients with hormone receptor (HR)-positive, ERBB2 (formerly HER2)-, high-risk early breast cancer enrolled in the randomized clinical trial monarchE who received NAC.

Design, Setting, And Participants: The monarchE randomized clinical trial was a multicenter, phase 3, open-label study that evaluated adjuvant treatment with abemaciclib plus endocrine therapy (ET) compared with ET alone in patients with HR+, ERBB2-, and node-positive early breast cancer who were at high risk of recurrence.

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Objective: To better understand the status of medical treatment for human epidermal growth factor receptor 2 (HER2)-positive breast cancer and the differences between the Chinese and the international clinical practice.

Methods: This was a retrospective, nationwide, multicenter, epidemiological study of advanced breast cancer patients from China. Between January 01, 2012, and December 31, 2014, a total of 3649 patients, covering 7 geographic regions and 21 institutions, participated in this series of studies.

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Aim: To compare the efficacy, safety, and tolerability of abemaciclib plus endocrine therapy (ET) ET alone in postmenopausal women with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer (ABC) from China, Brazil, India, and South Africa.

Methods: This randomized, double-blind, phase III study was conducted between 9 December 2016 and 29 March 2019. Postmenopausal women with HR-positive, HER2-negative ABC with no prior systemic therapy in an advanced setting (cohort A) or progression on prior ET (cohort B) received abemaciclib (150 mg twice daily) or placebo plus: anastrozole (1 mg/day) or letrozole (2.

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Although receptor status including estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor 2 (HER2) of the primary breast tumors was related to the prognosis of breast cancer patients, little information is yet available on whether patient management and survival are impacted by receptor conversion in breast cancer metastases. Using data from the nation-wide multicenter clinical epidemiology study of advanced breast cancer in China (NCT03047889), we report the situation of retesting ER, PR and HER2 status for breast cancer metastases and evaluate the patient management and prognostic value of receptor conversion. In total, 3295 patients were analyzed and 1583 (48.

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Objective: To identify molecular markers of lung squamous cell carcinoma by cDNA microarray technique.

Methods: cDNA expression profiles were examined by microarrays of 6 surgical specimens of stage I lung squamous cell carcinomas. Those genes, either up-regulated or down-regulated in every specimen studied, were identified.

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Objective: To investigate the gene expression of matrix metalloproteinases 1 (MMP1) and tissue inhibitors of matrix metalloprotainases 1(TIMP1) in squmas cell lung cancer and adenocarcinoma.

Methods: Gene expression profile cDNA microarray egntaining 4,096 genes was used to identify differentially expressed genes in squmas cell lung cancer and adenocarcinoma, and to analyze the gene expression of MMP1 and TIMP1.

Results: Gene MMP1 and TIMP1 were differentially expressed in both squmas cell lung cancer and adenocarcinoma, and both of them were up-regulated.

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Objective: To study lung squamamouscarcinoma and lung adenocarcinoma gene expression profiles by cDNA microarrays, compare them with those of pulmonary inflammatory pseudoneoplasma, and screen the differential expression gene and the common expression gene in these types of lung cancer in order to further study early diagnosis and treatment of lung cancer.

Methods: cDNA microarray chips containing 4096 human target genes were used to identify gene expression profiles in lung squamous cell carcinoma, adenocarcinoma, and pulmonary inflammatory pseudoneoplasma.

Results: Among the target genes, 591 differentially expressed genes were identified in lung squamous cell carcinoma; among them, there were 476 genes unexpressed in pulmonary inflammatory pseudoneoplasma; 293 of 476 differentially expressed genes were up-regulated and the other 183 were down-regulated.

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