Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by T Truong
Total Records ( 3 ) for T Truong
  T Truong , W Sauter , J. D McKay , H. D Hosgood , C Gallagher , C. I Amos , M Spitz , J Muscat , P Lazarus , T Illig , H. E Wichmann , H Bickeboller , A Risch , H Dienemann , Z. F Zhang , B. P Naeim , P Yang , S Zienolddiny , A Haugen , L Le Marchand , Y. C Hong , J. H Kim , E. J Duell , A. S Andrew , C Kiyohara , H Shen , K Matsuo , T Suzuki , A Seow , D. P. K Ng , Q Lan , D Zaridze , N Szeszenia Dabrowska , J Lissowska , P Rudnai , E Fabianova , V Constantinescu , V Bencko , L Foretova , V Janout , N. E Caporaso , D Albanes , M Thun , M. T Landi , J Trubicka , M Lener , J Lubinski , Wang EPIC lung , A Chabrier , P Boffetta , P Brennan and R. J. Hung
 

Background. Analysis of candidate genes in individual studies has had only limited success in identifying particular gene variants that are conclusively associated with lung cancer risk. In the International Lung Cancer Consortium (ILCCO), we conducted a coordinated genotyping study of 10 common variants selected because of their prior evidence of an association with lung cancer. These variants belonged to candidate genes from different cancer-related pathways including inflammation (IL1B), folate metabolism (MTHFR), regulatory function (AKAP9 and CAMKK1), cell adhesion (SEZL6) and apoptosis (FAS, FASL, TP53, TP53BP1 and BAT3). Methods. Genotype data from 15 ILCCO case–control studies were available for a total of 8431 lung cancer cases and 11 072 controls of European descent and Asian ethnic groups. Unconditional logistic regression was used to model the association between each variant and lung cancer risk. Results. Only the association between a non-synonymous variant of TP53BP1 (rs560191) and lung cancer risk was significant (OR = 0.91, P = 0.002). This association was more striking for squamous cell carcinoma (OR = 0.86, P = 6 x 10–4). No heterogeneity by center, ethnicity, smoking status, age group or sex was observed. In order to confirm this association, we included results for this variant from a set of independent studies (9966 cases/11 722 controls) and we reported similar results. When combining all these studies together, we reported an overall OR = 0.93 (0.89–0.97) (P = 0.001). This association was significant only for squamous cell carcinoma [OR = 0.89 (0.85–0.95), P = 1 x 10–4]. Conclusion. This study suggests that rs560191 is associated to lung cancer risk and further highlights the value of consortia in replicating or refuting published genetic associations.

  E Yao , W Zhou , S. T Lee Hoeflich , T Truong , P. M Haverty , J Eastham Anderson , N Lewin Koh , B Gunter , M Belvin , L. J Murray , L. S Friedman , M. X Sliwkowski and K. P. Hoeflich
 

Purpose: Oncogenic activation of the phosphatidylinositol 3-kinase (PI3K) signaling pathway is prevalent in breast cancer and has been associated with resistance to HER2 inhibitors in the clinic. We therefore investigated the combinatorial activity of GDC-0941, a novel class I PI3K inhibitor, with standard-of-care therapies for HER2-amplified breast cancer.

Experimental Design: Three-dimensional laminin-rich extracellular matrix cultures of human breast cancer cells were utilized to provide a physiologically relevant approach to analyze the efficacy and molecular mechanism of combination therapies ex vivo. Combination studies were done using GDC-0941 with trastuzumab (Herceptin), pertuzumab, lapatinib (Tykerb), and docetaxel, the principal therapeutic agents that are either approved or being evaluated for treatment of early HER2-positive breast cancer.

Results: Significant GDC-0941 activity (EC50 <1 µmol/L) was observed for >70% of breast cancer cell lines that were examined in three-dimensional laminin-rich extracellular matrix culture. Differential responsiveness to GDC-0941 as a single agent was observed for luminal breast cancer cells upon stimulation with the HER3 ligand, heregulin. Combined treatment of GDC-0941, trastuzumab, and pertuzumab resulted in growth inhibition, altered acinar morphology, and suppression of AKT mitogen-activated protein kinase (MAPK) / extracellular signed-regulated kinase (ERK) kinase and MEK effector signaling pathways for HER2-amplified cells in both normal and heregulin-supplemented media. The GDC-0941 and lapatinib combination further showed that inhibition of HER2 activity was essential for maximum combinatorial efficacy. PI3K inhibition also rendered HER2-amplified BT-474M1 cells and tumor xenografts more sensitive to docetaxel.

Conclusions: GDC-0941 is efficacious in preclinical models of breast cancer. The addition of GDC-0941 to HER2-directed treatment could augment clinical benefit in breast cancer patients.

  T Truong , R. J Hung , C. I Amos , X Wu , H Bickeboller , A Rosenberger , W Sauter , T Illig , H. E Wichmann , A Risch , H Dienemann , R Kaaks , P Yang , R Jiang , J. K Wiencke , M Wrensch , H Hansen , K. T Kelsey , K Matsuo , K Tajima , A. G Schwartz , A Wenzlaff , A Seow , C Ying , A Staratschek Jox , P Nurnberg , E Stoelben , J Wolf , P Lazarus , J. E Muscat , C. J Gallagher , S Zienolddiny , A Haugen , H. F. M van der Heijden , L. A Kiemeney , D Isla , J. I Mayordomo , T Rafnar , K Stefansson , Z. F Zhang , S. C Chang , J. H Kim , Y. C Hong , E. J Duell , A. S Andrew , F Lejbkowicz , G Rennert , H Muller , H Brenner , L Le Marchand , S Benhamou , C Bouchardy , M. D Teare , X Xue , J McLaughlin , G Liu , J. D McKay , P Brennan and M. R. Spitz
  Background

Genome-wide association studies have identified three chromosomal regions at 15q25, 5p15, and 6p21 as being associated with the risk of lung cancer. To confirm these associations in independent studies and investigate heterogeneity of these associations within specific subgroups, we conducted a coordinated genotyping study within the International Lung Cancer Consortium based on independent studies that were not included in previous genome-wide association studies.

Methods

Genotype data for single-nucleotide polymorphisms at chromosomes 15q25 (rs16969968, rs8034191), 5p15 (rs2736100, rs402710), and 6p21 (rs2256543, rs4324798) from 21 case–control studies for 11 645 lung cancer case patients and 14 954 control subjects, of whom 85% were white and 15% were Asian, were pooled. Associations between the variants and the risk of lung cancer were estimated by logistic regression models. All statistical tests were two-sided.

Results

Associations between 15q25 and the risk of lung cancer were replicated in white ever-smokers (rs16969968: odds ratio [OR] = 1.26, 95% confidence interval [CI] = 1.21 to 1.32, Ptrend = 2 x 10–26), and this association was stronger for those diagnosed at younger ages. There was no association in never-smokers or in Asians between either of the 15q25 variants and the risk of lung cancer. For the chromosome 5p15 region, we confirmed statistically significant associations in whites for both rs2736100 (OR = 1.15, 95% CI = 1.10 to 1.20, Ptrend = 1 x 10–10) and rs402710 (OR = 1.14, 95% CI = 1.09 to 1.19, Ptrend = 5 x 10–8) and identified similar associations in Asians (rs2736100: OR = 1.23, 95% CI = 1.12 to 1.35, Ptrend = 2 x 10–5; rs402710: OR = 1.15, 95% CI = 1.04 to 1.27, Ptrend = .007). The associations between the 5p15 variants and lung cancer differed by histology; odds ratios for rs2736100 were highest in adenocarcinoma and for rs402710 were highest in adenocarcinoma and squamous cell carcinomas. This pattern was observed in both ethnic groups. Neither of the two variants on chromosome 6p21 was associated with the risk of lung cancer.

Conclusions

In this international genetic association study of lung cancer, previous associations found in white populations were replicated and new associations were identified in Asian populations. Future genetic studies of lung cancer should include detailed stratification by histology.

 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility