Yun Gong

University of Texas MD Anderson Cancer Center, Houston, Texas, United States

Are you Yun Gong?

Claim your profile

Publications (105)461.19 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Objectives: We previously reported survival trends among patients with inflammatory breast cancer (IBC) over a 30-year period before 2005. Here we evaluated survival outcomes for women with IBC diagnosed before or after October 2006, in the era of HER2-directed therapy and after opening a dedicated multidisciplinary IBC clinic. Methods: We retrospectively identified and reviewed 260 patients with newly diagnosed IBC without distant metastasis, 168 treated before October 2006 and 92 treated afterward. Most patients received anthracycline and taxane-based neoadjuvant chemotherapy, mastectomy, and postmastectomy radiation. Survival outcomes were compared between the 2 groups. Results: Median follow-up time was 29 months for the entire cohort (39 and 24 mo for patients treated before and after October 2006). Patients treated more recently were more likely to have received neoadjuvant HER2-directed therapy for HER2-positive tumors (100% vs. 54%, P=0.001). No differences were found in receipt of hormone therapy. Three-year overall survival rates were 63% for those treated before and 82% for those treated after October 2006 (log-rank P=0.02). Univariate Cox analysis demonstrated better overall survival among patients treated after October 2006 than among those treated beforehand (hazard ratio [HR] 0.5; 95% confidence interval [CI], 0.34-0.94); a trend toward improved survival was noted in the multivariate analysis (HR=0.47; 95% CI, 0.19-1.16; P=0.10). Significant factors in the multivariate model included HER2-directed therapy (HR=0.38; 95% CI, 0.17-0.84; P=0.02) and estrogen receptor positivity (HR=0.32; 95% CI, 0.14-0.74; P=0.01). Conclusions: Survival improved in the context of the IBC clinic and prompt initiation of neoadjuvant HER2-directed therapeutics.
    American journal of clinical oncology 05/2013; 38(3). DOI:10.1097/COC.0b013e3182937921 · 3.06 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Background: Lymphoma with signet ring cell features (LSF) is a rare morphologic variant of non-Hodgkin lymphoma. Although it has been well documented in the surgical pathology literature, to the best of the authors's knowledge, the features of LSF in fine-needle aspiration (FNA) samples have rarely been reported. An accurate cytologic diagnosis of LSF is of important therapeutic significance. Methods: The authors retrospectively reviewed 7 FNA cases of LSF for cytologic features, ancillary studies, corresponding histologic findings, and the patients' clinical and radiologic information to illustrate the diagnostic clues and potential pitfalls. Results: The final diagnoses, based on a multidisciplinary approach, were follicular lymphoma (5 patients), large B-cell lymphoma of follicular center cell origin (1 patient), and low-grade B-cell lymphoma with plasmacytoid features (1 patient). FNAs were obtained from both lymph node and extranodal sites. Common cytologic features included various percentages of signet ring cells in a background of nonvacuolated lymphomatous cells, lymphoglandular bodies, and cytoplasmic rings. The majority of signet ring cells contained a single, large, clear intracytoplasmic vacuole that pushed the nucleus laterally whereas fewer cells contained ≥ 2 vacuoles that indented the nucleus into a scalloped or stellate configuration. These cells resemble, to some degree, other lesions with signet ring cell features. One of the diagnostic clues of LSF was the similarity in nuclear details between signet ring cells and surrounding nonvacuolated lymphoid cells. Conclusions: Familiarity with cytologic features, correlation with clinical/radiologic information, and ancillary studies are important for an accurate diagnosis of LSF and for distinguishing it from other lesions with signet ring cell features in FNA samples.
    Cancer Cytopathology 03/2013; 121(9). DOI:10.1002/cncy.21291 · 3.35 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Background: The authors compared the predictive value of type 16 and/or 18 human papillomavirus (HPV) versus non-16/18 HPV types for high-grade (grade ≥2) cervical neoplasm/vaginal intraepithelial neoplasm and carcinoma (CIN/VAIN2+) in women with mildly abnormal Papanicolaou (Pap) results (ie, atypical squamous cells of undetermined significance [ASCUS] or low-grade squamous epithelial lesion [LSIL]). Methods: The authors retrospectively selected Pap specimens with HPV testing results obtained from 243 women (155 with ASCUS and 88 with LSIL Pap results) in their Department of Pathology. HPV genotyping was performed using the EasyChip HPV blot assay. The Pap specimens with HPV16/18 and non-16/18 HPV types were compared with follow-up biopsy results. Follow-up duration ranged from 1 month to 58 months (mean, 26 months). Results: In total, 58 of 155 specimens (37%) that had ASCUS and 29 of 88 specimens (33%) that had LSIL were positive for HPV16/18. CIN/VAIN2+ biopsies were identified in 43 of 155 women (28%) with ASCUS and in 28 of 88 women (32%) with LSIL. Women with ASCUS and HPV16/18 had a significantly higher rate (43%) of CIN/VAIN2+ than women with ASCUS and non-16/18 HPV types (19%; P = .003; odds ratio, 3.10; 95% confidence interval, 1.48-6.53). There was no statistically significant difference in the rate of CIN/VAIN2+ between women who had LSIL and HPV16/18 (45%) and those who had LSIL and non-16/18 HPV types (29%; P = .16; odds ratio, 1.96; 95% confidence interval, 0.77-4.97). Conclusions: HPV genotyping for HPV16/18 improved risk assessment for women with ASCUS Pap results and may be used to predict the risk of CIN/VAIN2+ to better guide follow-up management.
    Cancer Cytopathology 02/2013; 121(2). DOI:10.1002/cncy.21240 · 3.35 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: BACKGROUND: To evaluate the efficacy and the limitation of fine-needle aspiration (FNA) biopsy in thyroid bed lesions, a retrospective review was performed of the medical records of thyroid cancer patients who underwent ultrasound-guided FNA biopsy of the thyroid bed at The University of Texas MD Anderson Cancer Center over a 5-year period. METHODS: Data were reviewed on 220 FNA biopsies taken from thyroid bed lesions in 195 patients who had undergone thyroidectomy for thyroid carcinoma. Thyroid bed FNA results were compared with clinical follow-up, including neck dissection results. RESULTS: Recurrent carcinoma was diagnosed by FNA biopsy in 139 of 220 (63%) cases. Neck dissections were performed for 112 sites identified by FNA biopsies, and recurrent carcinoma was confirmed in 110 sites. The concordance between positive and/or suspicious FNA diagnosis and positive neck dissection results was 98% (118 of 120 cases). A false-positive FNA occurred in one patient with follicular thyroid carcinoma. The other discrepancy was attributed to failure to remove the lesion by neck dissection. The diagnostic accuracy of thyroid bed FNA was 100% in papillary and medullary thyroid carcinoma and 93% in follicular thyroid carcinoma. Suspicious and rare false-negative FNA results were attributed to low cellularity and lack of characteristic cytomorphologic features of thyroid carcinoma. CONCLUSIONS: Ultrasound-guided thyroid bed FNA biopsy is accurate and efficient in triaging patients who require post-thyroidectomy follow-up for recurrent thyroid carcinoma. Caution should be taken in the interpretation of FNA specimens that have low cellularity and lack characteristic cytologic features of thyroid carcinoma. Cancer (Cancer Cytopathol) 2012. © 2012 American Cancer Society.
    Cancer Cytopathology 02/2013; 121(2). DOI:10.1002/cncy.21202 · 3.35 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The development of mature B cells from hematopoietic stem cells is a strictly orchestrated process involving multiple regulatory genes. The transcription factor Sox4 is required for this process, but its role has not been systematically studied, and the underlying mechanisms remain unknown. To determine when and how Sox4 functions in the stepwise process of B cell development, we used mice harboring conditional null alleles for Sox4 and a Cre transgene. Sox4 deletion in hematopoietic stem cells almost entirely eliminated pro-B cells in both fetal livers and adult bone marrow, resulting in a severe deficiency in later stage B cells, including circulating mature B cells. Sox4-deficient pro-B cells, particularly those expressing the stem cell factor receptor c-Kit, readily underwent apoptosis, and even more so when c-Kit activity was inhibited by imatinib. C-Kit-expressing pro-B cells showed decreased activation of the c-Kit downstream protein Src upon Sox4 deletion. Likewise, the level of the anti-apoptotic Bcl2 protein was decreased in residual pro-B cells, and its restoration using a Bcl2 transgene allowed not only partial rescue of pro-B cell survival but also B cell maturation in the absence of Sox4. Our findings indicate that Sox4 is required for the survival of pro-B cells and may functionally interact with c-Kit and Bcl2.
    The Journal of Immunology 01/2013; 190(5). DOI:10.4049/jimmunol.1202736 · 4.92 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Leukemia cells are protected by various components of its microenvironment, including marrow stromal cells (MSCs). To understand the molecular mechanisms underlying this protection, we cultured acute lymphoblastic leukemia (ALL) cells with MSCs and studied the effect of the latter on the molecular profiling of ALL cells at the mRNA and protein levels. Our results indicated that activated Wnt signaling in ALL cells is involved in MSC-mediated drug resistance. Blocking the Wnt pathway sensitized the leukemia cells to chemotherapy and improved overall survival in a mouse model. Targeting the Wnt pathway may be an innovative approach to the treatment of ALL.
    Cancer letters 01/2013; 333(1). DOI:10.1016/j.canlet.2012.11.056 · 5.62 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Background Inflammatory breast cancer (IBC) is a rare but aggressive type of breast carcinoma. Despite multimodality approaches, the clinical outcome of IBC patients remains poor. Tumors arising from cancer stem cells (CSCs) are associated with drug resistance, tumor recurrence and poor prognosis. We aimed to evaluate expression of aldehyde dehydrogenase 1 (ALDH1), a putative stem cell marker, in IBC tumors. Methods Tissue microarrays of 74 surgically resected IBC tumors were immunohistochemically stained for ALDH1. The results were correlated with clinicopathologic parameters, survival data, and compared with findings published in the literature. Results The median follow-up time of the cohort was 42.1 months, and the 5-year overall survival (OS) rate was 46%. Twenty-four tumors (32%) were positive for ALDH1 staining. However, ALDH1 expression was not significantly associated with clinicopathologic variables, including lymph node status, tumor grade, and ER, PR, and HER2 status. Log-rank testing revealed that ALDH1 expression was not significantly associated with the OS rate although there was a trend toward an association with lower OS rate (P = 0.07). The findings were consistent with some of the published data, but substantial inconsistency among reports was noted. Conclusions Our IBC cohort did not show significant correlation between ALDH1 expression and prognosis or other clinicopathologic variables. Although sample size and selection factors may be contributory factors, inconsistent results reported in the literature raise concern regarding the reliability of immunohistochemically identified ALDH1 as a sole marker of breast CSCs. Further study is required to elucidate the significance of CSCs in IBC biology.
    Clinical Breast Cancer 01/2013; 14(3). DOI:10.1016/j.clbc.2013.12.006 · 2.11 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Objectives: Metastatic lesions to the pancreas pose diagnostic challenges with regards to their differentiation from primary pancreatic cancer. Data on the yield of endoscopic ultrasonography (EUS)-guided fine-needle aspiration in detection of these lesions are limited. Methods: This is a retrospective review of 23 patients referred to a tertiary referral center for further evaluation of suspected pancreatic metastases. Main outcome measures were diagnostic yield of endoscopic ultrasonography-guided fine-needle aspiration in evaluation of metastatic lesions to the pancreas. Results: Of 644 patients, 23 (3.6%) undergoing EUS of the pancreas were diagnosed to have metastatic disease to the pancreas based on clinical, radiological, and cytological results. Mean (SD) age was 64.3 (11.7) years. Of the 23 patients, 18 (78.3%) were asymptomatic. Mean (SD) size of lesion on EUS was 39.1 (19.9) mm. A diagnosis of malignant lesion was made in 21 of 23 cases, with a diagnostic accuracy of 91.3%. Conclusions: Metastatic lesions to the pancreas present as incidental, solitary mass lesions on staging or surveillance imaging. Endoscopic ultrasonography-guided fine-needle aspiration is an important tool in the characterization and further differentiation of metastatic lesions to the pancreas from primary pancreatic cancer.
    Pancreas 12/2012; 42(3). DOI:10.1097/MPA.0b013e31826c276d · 2.96 Impact Factor
  • 11/2012; 1(1):S71. DOI:10.1016/j.jasc.2012.08.156
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Patients with ovarian serous tumors of low malignant potential (OSLMP) who have peritoneal implants, especially invasive implants, are at an increased risk of developing tumor recurrence. To the best of the authors' knowledge, the ability of peritoneal washing (PW) cytology to detect the presence and type of peritoneal implants has not been adequately investigated, and its prognostic significance is unknown. Records and PW specimens of 101 patients diagnosed with and treated for OSLMP between 1996 and 2010 at The University of Texas MD Anderson Cancer Center were retrospectively reviewed. Patients' staging biopsy findings were compared with the results of the authors' review of the PWs. Follow-up data were also analyzed. Of the 96 patients for whom staging biopsy results were available, 26 (27%) had peritoneal implants (17 noninvasive and 9 invasive), 19 (20%) had endosalpingiosis, and 51 (53%) had negative findings. The PW specimens of 18 of the 26 patients (69%) with peritoneal implants were positive for serous neoplasm, and a correlation was found between cytologic and histologic findings (P < .0001). The sensitivity, specificity, positive predictive value, and negative predictive value were 69%, 84%, 62%, and 88%, respectively. Four of 101 patients had disease recurrence; 3 of these patients had invasive implants and 1 patient had noninvasive implants. None of the patients who had negative staging biopsy findings or endosalpingiosis but did have PW specimens that were positive for serous neoplasm developed disease recurrence. PW cytology detects the presence of peritoneal implants with moderate accuracy. However, long-term studies are needed to determine whether positive PW cytologic findings are an independent predictor of tumor recurrence.
    Cancer Cytopathology 08/2012; 120(4):238-44. DOI:10.1002/cncy.21219 · 3.35 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: To facilitate accurate detection of estrogen receptor (ER) expression in breast tumors, the American Society of Clinical Oncology/College of American Pathologists recommends that cold ischemia time be kept under 1 h. However, data to address the upper threshold of cold ischemia time are limited. Although it is our routine practice to keep cold ischemia time under 1 h for breast core biopsy specimens, this is difficult for surgical specimens because of the comprehensive intraoperative assessment performed at our institution. In this retrospective study, we compared ER immunohistochemical staining results in paired breast tumor core biopsy specimens and resection specimens with cold ischemia times ranging from 64 to 357 min in 97 patients. The staining category (≥10%, positive; 1–9%, low positive; <1%, negative) between the core biopsy and resection specimens changed for five patients (5%). The weighted Kappa statistic for ER staining category between the two specimen types was 0.86 (95% confidence interval, 0.74–0.99), indicating good concordance. The difference in the percentage of ER staining between core biopsy and resection was not significantly associated with cold ischemia time (P=0.81, Spearman correlation). Although we did not observe significant associations between the difference in ER staining in the two specimen types and cold ischemia time after placing the patients in three groups of ‘increase’, ‘decrease’ and ‘no change’ using a difference of 25% in ER staining percentage as the cutoff, a trend of decreased ER staining with cold ischemia time >2 h was detected. No statistically significant association was found between the change of ER staining and the history of neoadjuvant chemotherapy. Our findings indicate that prolonged cold ischemia time up to 4 h (97% of our cohort) in the practice setting of our institution has minimal clinical impact on ER immunohistochemical expression in breast tumors.
    Modern Pathology 08/2012; 26(1). DOI:10.1038/modpathol.2012.135 · 6.19 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Inflammatory breast cancer (IBC) is a highly angiogenic disease; thus, antiangiogenic therapy should result in a clinical response. However, clinical trials have demonstrated only modest responses, and the reasons for these outcomes remain unknown. Therefore, the purpose of this retrospective study was to determine the prognostic value of protein levels of vascular endothelial growth factor (VEGF-A), one of the main targets of antiangiogenic therapy, and its receptors (VEGF-R1 and -R2) in IBC tumor specimens. Specimens from IBC and normal breast tissues were obtained from Algerian patients. Tumor epithelial and stromal staining of VEGF-A, VEGF-R1, and VEGF-R2 was evaluated by immunohistochemical analysis in tumors and normal breast tissues; this expression was correlated with clinicopathological variables and breast cancer-specific survival (BCSS) and disease-free survival (DFS) duration. From a set of 117 IBC samples, we evaluated 103 ductal IBC tissues and 25 normal specimens. Significantly lower epithelial VEGF-A immunostaining was found in IBC tumor cells than in normal breast tissues (P <0.01), cytoplasmic VEGF-R1 and nuclear VEGF-R2 levels were slightly higher, and cytoplasmic VEGF-R2 levels were significantly higher (P = 0.04). Sixty-two percent of IBC tumors had high stromal VEGF-A expression. In univariate analysis, stromal VEGF-A levels predicted BCSS and DFS in IBC patients with estrogen receptor-positive (P <0.01 for both), progesterone receptor-positive (P = 0.04 and P = 0.03), HER2+ (P = 0.04 and P = 0.03), and lymph node involvement (P <0.01 for both). Strikingly, in a multivariate analysis, tumor stromal VEGF-A was identified as an independent predictor of poor BCSS (hazard ratio [HR]: 5.0; 95% CI: 2.0-12.3; P <0.01) and DFS (HR: 4.2; 95% CI: 1.7-10.3; P <0.01). To our knowledge, this is the first study to demonstrate that tumor stromal VEGF-A expression is a valuable prognostic indicator of BCSS and DFS at diagnosis and can therefore be used to stratify IBC patients into low-risk and high-risk groups for death and relapses. High levels of tumor stromal VEGF-A may be useful for identifying IBC patients who will benefit from anti-angiogenic treatment.
    BMC Cancer 07/2012; 12(1):298. DOI:10.1186/1471-2407-12-298 · 3.36 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: We retrospectively reviewed 25 fine-needle aspiration cases of sclerosing adenosis of the breast in conjunction with histologic features of the paired core-needle biopsy and radiologic findings. The original cytologic diagnoses were benign (n = 19), focally atypical (n = 3), and suspicious for carcinoma (n = 3). The frequent features, although not specific, were low-to-moderate cellularity, bland epithelial cells that focally formed cohesive groups/tubules or occasionally discohesive clusters or individual cells, and fragments of dense fibrous stroma. Some tubules had an angulated configuration. Myoepithelial cells were present in all cases but were scant or absent in small epithelial groups. These cytologic features closely reflected the histologic appearances (ie, compressed and attenuated tubules and sclerotic stroma), but may cause overinterpretation on cytologic smears, especially when angulated tubules, discohesive or individual epithelial cells, scanty myoepithelial cells, and nuclear atypia are noted concurrently. Familiarity with its cytologic features may prevent false-positive diagnosis. Histologic confirmation is recommended for difficult cases.
    American Journal of Clinical Pathology 07/2012; 138(1):96-102. DOI:10.1309/AJCP8MN5GXFZULRD · 2.51 Impact Factor
  • Journal of Clinical Oncology 06/2012; 30(22):e202-6. DOI:10.1200/JCO.2011.40.2230 · 18.43 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Aims: In addition to oestrogen and progesterone receptors, gross cystic disease fluid protein-15 (GCDFP-15) and mammaglobin A (MAM) are the most common markers used to identify breast origin by immunohistochemistry. GCDFP-15 expression has been reported in approximately 60% of breast carcinomas and MAM expression in approximately 80%. Data on their expression in triple-negative breast cancer (TNBC) are very limited. The aim of this study was to examine the expression of these markers in TNBC to determine their utility in pathological diagnosis. Methods and results: We studied the immunohistochemical (IHC) expression of GCDFP-15 and MAM in 63 primary and 118 metastatic TNBCs. GCDFP-15 staining was present in 14% of primary and 21% of metastatic TNBCs. MAM staining was present in 25% of primary and 41% of metastatic TNBCs. The frequency of expression of GCDFP-15 and/or MAM was 30% in primary and 43% in metastatic TNBCs, and many positive tumours had only focal staining. Conclusions: Staining for GCDFP-15 and/or MAM in triple-negative carcinomas helps to confirm breast origin, but most tumours in this subgroup of breast carcinomas lack expression of either marker.
    Histopathology 06/2012; 62(2). DOI:10.1111/j.1365-2559.2012.04344.x · 3.45 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Diagnosis of follicular variant of papillary thyroid carcinoma (FVPTC) by ultrasound-guided fine-needle aspiration (FNA) is challenging. In this retrospective review, we evaluated triage efficacy (i.e., potential for triggering surgical intervention) in 44 archived FNA biopsies of surgically confirmed FVPTC obtained between December 2006 and December 2008. We compared the original FNA diagnoses with reclassified diagnoses based on 2007 National Cancer Institute (NCI)/Bethesda recommendations, and reviewed FNA cytologic features. Original FNA diagnoses included colloid nodule (7%, 3/44), atypical follicular cells (5%, 2/44), follicular lesion (11%, 5/44), follicular neoplasm (16%, 7/44), suspicious for malignancy/PTC (27%, 12/44), and papillary thyroid carcinoma (34%, 15/44). Reclassified diagnoses included indeterminate (5%, 2/44), colloid nodule (7%, 3/44), atypical cells of undetermined significance [ACUS] (7%, 3/44), Hurthle cell neoplasm (2%, 1/44), follicular neoplasm (7%, 3/44), suspicious for malignancy/PTC (25%, 11/44), and PTC (48%, 21/44). Triage efficacy was 77% (34/44) for original diagnoses versus 82% (36/44) for reclassified FNA diagnoses. We frequently observed cytologic features of PTC, such as nuclear grooves and fine chromatin; conversely, intranuclear inclusions, though present in 77% cases, were scant. Our review findings suggest that lack of characteristic cytologic features of PTC,coexistence with other thyroid lesions, and small tumor size arethe major obstacles to FNA diagnosis of FVPTC. Reclassification of thyroid FNA diagnoses does not significantly improve triage efficacy. Furthermore, FNA diagnoses of follicular neoplasm and suspicious for malignancy are valuable in patients with FVPTC because they trigger triage toward surgical intervention.
    Diagnostic Cytopathology 05/2012; 40 Suppl 1(S1):E69-73. DOI:10.1002/dc.21718 · 1.12 Impact Factor
  • Gastrointestinal Endoscopy 04/2012; 75(4):AB266. DOI:10.1016/j.gie.2012.04.278 · 5.37 Impact Factor
  • Tatjana Antic · Yun Gong · Nour Sneige
    [Show abstract] [Hide abstract]
    ABSTRACT: Invasive ductal and lobular breast carcinomas often have different preferred metastasis sites and distinct histomorphologic characteristics. Their metastatic cytomorphologic cell features in body cavity fluids are generally readily recognized, but the single-cell/mesothelial-like pattern and its relationship to the primary tumor type have not been well studied, nor whether metastases have a propensity for certain body cavity sites on the basis of the primary tumor type. To further assess the tumor type and single-cell pattern of breast carcinoma metastases in pleural and peritoneal effusions, we retrospectively studied 853 pleural and peritoneal effusions and correlated the findings with the primary tumor type. When necessary, the single- cell/mesothelial-like pattern was documented immunohistochemically. Metastatic breast carcinomas represented 249 (50.8%) of 490 pleural and 51 (14.0%) of 363 peritoneal effusions. Most metastases in pleural and peritoneal effusions were ductal carcinomas (92.4% and 62.7%, respectively). Lobular carcinoma accounted for only 2 (0.8%) of 249 pleural and 11 (21.6%) of 51 peritoneal effusions. The single-cell/mesothelial-like cell pattern was found in all lobular carcinomas but also in 11 (6.0%) of 184 reviewed ductal carcinomas (nine pleural and two peritoneal). Awareness of these findings and the use of immunohistochemical analyses are necessary for accurately diagnosing metastatic breast carcinoma, especially lobular type.
    Diagnostic Cytopathology 04/2012; 40(4):311-5. DOI:10.1002/dc.21563 · 1.12 Impact Factor
  • Pancreas 03/2012; 41(2):327-9. DOI:10.1097/MPA.0b013e3182297885 · 2.96 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Estrogen receptor-alpha 36 (ER-α36) is a variant of ER-α that has been found to be expressed in conventional ER (ER-α66)-negative breast cancer cell lines and human breast cancer samples. In this study, we found that, using immunohistochemical study, ER-α36 expression was significantly higher in ER-negative tumors than in ER-positive tumors although the expression was not associated with other clinicopathological characteristics. We then constructed an ER-α36-specific microRNA hairpin vector and established stable ER-α36 knockdown cells, and found that the knockdown cells were more sensitive to paclitaxel; the c-Jun N-terminal kinase pathway appeared to be involved in the mechanism. Downregulation of ER-α36 also resulted in decreased migration and invasion. These changes were estrogen independent. Our findings indicated that target ER-α36 may be a strategy for treating ER-negative breast cancers.
    Steroids 02/2012; 77(6):666-73. DOI:10.1016/j.steroids.2012.02.013 · 2.64 Impact Factor

Publication Stats

2k Citations
461.19 Total Impact Points


  • 2003–2015
    • University of Texas MD Anderson Cancer Center
      • Department of Pathology
      Houston, Texas, United States
    • University of Illinois at Chicago
      Chicago, Illinois, United States
  • 2011
    • University of Texas Health Science Center at Houston
      Houston, Texas, United States
  • 2009
    • University of Pittsburgh
      Pittsburgh, Pennsylvania, United States
  • 2005–2007
    • University of Houston
      Houston, Texas, United States
  • 2004
    • Northwestern University
      • Department of Pathology
      Evanston, Illinois, United States
  • 2002
    • Children's Memorial Hospital
      Chicago, Illinois, United States