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Sym S, Hong J, Park J, Cho E, Lee W, Chung M, Park Y, Lee J, Shin D. Phase I dose-finding study of epirubicin, oxaliplatin, and S-1 (EOS) in patients with previously untreated advanced gastric cancer (AGC). J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
123 Background: To determine the recommended dose (RD) and dose-limiting toxicity (DLT) of EOS combination in patients with previously untreated AGC. Methods: Previously untreated patients with histologically proven metastatic or recurrent AGC and ECOG performance status 0-2 were enrolled. Fixed dose of epirubicin (50 mg/m2) and oxaliplatin (130 mg/m2) was administered i.v. on day 1. The dose of S-1 was escalated as following schedule: Level I: 30 mg/m2, Level II: 40 mg/m2, Level III: 45 mg/m2, Level IV: 50 mg/m2. S-1 was administered orally twice a day on days 1-14. Each cycle was repeated every 21 days. DLTs were evaluated during the first two cycles of treatment. Results: Nineteen patients were enrolled: 13 patients in dose-escalation phase and 6 patients in the extension at the RD. Median age was 53 years (range, 40-71 years). At dose level II, 1 DLT (grade 4 neutropenia lasting more than 5 days) was found among 6 patients while at dose level III, 2 DLTs (grade 3 diarrhea and nausea) were observed among 4 patients. Therefore, the dose level II was determined as RD. Cumulative (all cycles) grade 3/4 toxicity included neuropenia (58%), leucopenia (32%), thrombocytopenia (11%), diarrhea (11%), and nausea (5%). Of 13 patients with measurable lesions, 8 achieved partial response and 3 showed stable diseases, and the objective response rate was 62% (95% CI, 36-88%). The median progression-free survival was 6.5 months (95% CI, 4.7-8.2 months). Conclusions: The RD of the EOS regimen in patients with previously untreated AGC was epirubicin 50 mg/m2 and oxaliplatin 130 mg/m2 on day 1 and S-1 40 mg/m2 twice a day on days 1-14 of every 21-day cycle. This regimen seems to have promising preliminary activity. No significant financial relationships to disclose.
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Sym S, Hong J, Cho E, Lee W, Chung M, Ha S, Park Y, Park J, Lee J, Shin D. Prognostic impact of immunohistochemical expression of Ki-67 in patients with advanced gastric cancer who underwent curative resection. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
19 Background: Ki-67, tumor proliferation marker, is an important prognostic factor in a variety of cancers. In the present study, we investigated the prognostic value of immunoexpression of Ki-67 in patient with gastric cancer who underwent curative resection. Methods: We retrospectively analyzed 241 patients who had undergone curative gastrectomy at Gachon University Gil Hospital between January 2008 and July 2009. Ki-67 proliferation index (PI) by immunohistochemistry on formalin-fixed, paraffin-embedded material and the other clinicopathologic variables were evaluated by univariate and mulvariate analysis. Results: The median follow-up from surgery was 12 months (range, 0.5-26.7 months) and mean recurrence-free survival was 23 months (95% confidence interval, 21.8-24.1 months). The mean Ki-67 PI was 40% (range, 5-90%). No significant correlation was found between Ki-67 PI and other clinicopathologic variables including histologic grade and pathologic TNM (pTNM) stage. Univariate analysis revealed that significant prognostic factors of recurrence-free survival included age, preoperative serum albumin, pre-operative hemoglobin, surgery type, pTNM, histologic grade, lymphatic vessel invasion, peri-neural invasion, and Ki-67 PI. In the multivariate analysis besides pTNM (p=0.046), lymphatic vessel invasion (p=0.024), and surgery type (p=0.047), Ki-67 PI (p=0.005) also remained as an independent prognostic factor of recurrence, whereas the other factors lost its prognostic value. Conclusions: Our results suggest that high Ki-67 PI is independent, poor prognostic factor of recurrence in patient with gastric cancer who underwent curative resection. No significant financial relationships to disclose.
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Lee H, Lee K, Ahn M, Hwang H, Lee J, Park K, Kim T, Yi C, Chung M. Proposal of new CT response criteria in non-small cell lung cancer patients treated with EGFR tyrosine kinase inhibitor. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.7035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Sym S, Park Y, Park S, Park J, Cho E, Lee W, Chung M, Shin D, Lee J. A randomized phase II study of biweekly irinotecan versus irinotecan plus 5-fluorouracil/leucovorin combination as a salvage chemotherapy in previously treated patients with advanced/metastatic gastric cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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105
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Matemo D, Kinuthia J, John F, Chung M, Farquhar C, John-Stewart G, Kiarie J. Indeterminate rapid HIV-1 test results among antenatal and postnatal mothers. Int J STD AIDS 2010; 20:790-2. [PMID: 19875832 DOI: 10.1258/ijsa.2008.008427] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The sensitivity and specificity of rapid HIV-1 tests may be altered during pregnancy and postpartum. We conducted a study to determine the prevalence and correlates of false-positive Abbott Determine and false-negative Uni-Gold rapid HIV-1 test results among antenatal and postnatal mothers attending a primary care clinic in Nairobi, Kenya. Mothers were tested for HIV-1 using Abbott Determine and non-reactive results were considered HIV-1 antibody negative. Reactive samples by Determine were re-tested by Uni-Gold. Vironostika HIV-1 and Uni-FORM II Enzyme-linked immunosorbent assays were used to confirm samples that had positive Abbott Determine and negative Uni-Gold. Among 2311 women who accepted HIV-1 testing, 1238 (54%) were tested antenatally and 1073 (46%) were tested postnatally. Of tested women, 274 (12%) women were reactive by Abbott Determine and on retesting with Uni-Gold 30 (11%) had indeterminate results. The prevalence of indeterminate results was significantly higher in antenatal women than in postnatal women (2% versus 1%, P = 0.03). In conclusion, indeterminate rapid HIV-1 test results are more common in the antenatal period and appropriate safeguards to confirm HIV-1 infection status should be implemented in antenatal programmes.
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Chung M. 159 GABAPENTIN INDUCED HEPATOTOXICITY — A CASE REPORT. Eur J Pain 2009. [DOI: 10.1016/s1090-3801(09)60162-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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107
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Sym S, Park S, Park J, Kwon K, Jung I, Cho E, Lee W, Chung M, Shin D, Lee J. A randomized phase II trial of weekly docetaxel plus either cisplatin or oxaliplatin in patients with previously untreated advanced gastric cancer: Preliminary results. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.4566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4566 Background: Docetaxel, in combination with cisplatin or oxaliplatin, has demonstrated efficacy against AGC. This randomized phase II trial evaluated two weekly docetaxel-based regimens to see which would be most promising according to objective response rate (ORR) as first-line therapy in AGC. Methods: Chemotherapy-naïve patients with measurable unresectable and/or metastatic gastric adenocarcinoma and a performance status ≤2 were randomly assigned to receive docetaxel (35 mg/m2) weekly on days 1 and 8 of a 21-day cycle plus either cisplatin (60 mg/m2 on day 1) (arm A) or oxaliplatin (120 mg/m2 on day 1) (arm B). Toxicity was assessed on days 1, 8, and 21 of each cycle, and response was evaluated every 2 cycles. Results: Between March 2007 and December 2008, 61 eligible patients entered. In Arm A, 29 patients were evaluable for objective response and 31 for safety. In Arm B, 28 patients were evaluable for objective response and 30 for safety. Median age was 52 years and disease status was comparable for both arms. Ten of 29 (34.5%) patients had a confirmed objective response in the arm A (95% confidence interval [CI] 17.1–51.8%) and 11 of 28 (39.2%) patients had a confirmed objective response in the arm B (95% CI 21.1- 57.2%). No significant difference was noted between the arms both for ORR (p=0.202) or for disease control (58.6% and 82.1%, respectively, p=0.082). Median progression free survival time was 4.4 month in the arm A and 4.3 months in the arm B (Hazard ratio = 0.936; 95% CI, 0.503–1.744; p = 0.836). There was no relevant difference in the occurrence of overall grade ¾ toxicity between the two arms (51.6% vs. 46.6%, respectively; p=0.800). Neutropenia was the most common grade 3/4 toxicity (32.3% vs. 36.6%, respectively). There was one treatment related death in Arm B. Conclusions: The preliminary results showed that both treatment arms have similar clinical efficacy as front-line treatment in AGC. Each regimen has a manageable tolerability profile. The accrual is ongoing. No significant financial relationships to disclose.
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Huang C, Loewen P, Pelletier T, Slater J, Chung M. Implementation of proven interventions in general medical inpatients: development and evaluation of a new quality indicator for drug therapy. Qual Saf Health Care 2008; 17:269-74. [PMID: 18678724 DOI: 10.1136/qshc.2007.023416] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Among adult general medical inpatients, there are numerous interventions whose benefits outweigh their risks. However, there are no published reports describing the overall use of such proven interventions in this population. OBJECTIVES To determine implementation rates of a broad range of interventions while accounting for valid reasons for non-use, predictors of implementation and feasibility of generating new indices to describe quality of care. METHODS Based on a review of current practice guidelines and clinical trials related to five common conditions, implementation rates of 17 interventions were assessed retrospectively. Subjects were a complete sample of 150 adults with target medical conditions discharged from general medical units at an urban community hospital. RESULTS The Ideal Intervention Index (3I), which described the proportion of ideal intervention opportunities that were implemented, was 0.74 (95% CI 0.70 to 0.78). The Justified Non-Use Index (JNUI), which described the proportion of all the interventions not implemented that were justified by a valid reason for non-use, was 0.49 (95% CI 0.41 to 0.55). Smoking cessation therapy in high-risk patients had the lowest indices (3I 0.30, 95% CI 0.00 to 0.60; JNUI 0.00), and aspirin for secondary stroke prevention had the highest (3I 1.0; JNUI 1.0). CONCLUSIONS Overall, proven interventions are underused among the patients studied, and the reasons for non-use are frequently not readily discernible. There is potential for improvement, but research is required to further investigate reasons for non-use. It is feasible to measure implementation rates of proven interventions as an indicator of quality of care using the indices developed.
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Thornton GM, Shao X, Chung M, Sciore P, Boorman RS, Hart DA, Lo IKY. Changes in mechanical loading lead to tendonspecific alterations in MMP and TIMP expression: influence of stress deprivation and intermittent cyclic hydrostatic compression on rat supraspinatus and Achilles tendons. Br J Sports Med 2008; 44:698-703. [DOI: 10.1136/bjsm.2008.050575] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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110
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Baker H, Chung M, Basu I, Baker E, Fraser J. Two staphylococcal sialic acid binding proteins from the superantigen superfamily. Acta Crystallogr A 2008. [DOI: 10.1107/s0108767308088594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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111
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Chung M, Hong Y, Yoon H, Kwak B. Expression of cyclin D1 and bcl-2 in infiltrative ductal carcinoma of the breast – their correlations and clinical implications. EJC Suppl 2008. [DOI: 10.1016/s1359-6349(08)70774-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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112
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Park S, Nam E, Park J, Cho E, Shin D, Lee J, Lee W, Chung M, Lee S. Randomized phase II study of irinotecan, leucovorin and 5-fluorouracil (ILF) versus cisplatin plus ILF (PILF) combination chemotherapy for advanced gastric cancer. Ann Oncol 2008; 19:729-33. [DOI: 10.1093/annonc/mdm502] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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113
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Kerzner B, Murray A, Cheng E, Ifie R, Harvey P, Tomlinson M, Rarrick K, Barben J, Stek J, Chung M, Xu J, Chan I, Schlienger K, Schödel F, Silber J. P1082 Concomitant administration of Zostavax® and infiuenza vaccine in adults ≥50 years old. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70922-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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114
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Park D, Chung M, Chung J, Ahn H, Lee E, Choi H, Hong S, Cheon J, Yoon D, Lee Y, Yoon S, Kim W, Kim H, Ryu S, Lee S. MP-11.03. Urology 2006. [DOI: 10.1016/j.urology.2006.08.494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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115
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Montorsi F, Damião R, Chung M, Duggan A, Major-Walker K, Morrill B. RACIAL DIFFERENCES IN BASELINE CHARACTERISTICS IN THE COMBINATION OF AVODART™ AND TAMSULOSIN (COMBAT) TRIAL. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/s1569-9056(06)60699-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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116
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Lee HJ, Chun BS, Kim WC, Chung M, Park JW. Zero valent iron and clay mixtures for removal of trichloroethylene, chromium(VI), and nitrate. ENVIRONMENTAL TECHNOLOGY 2006; 27:299-306. [PMID: 16548210 DOI: 10.1080/09593332708618642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
A series of batch experiments on free swell, hydraulic conductivity, and contaminant removal efficiency was performed for the combination of bentonite and zero valent iron (ZVI), in order to identify the optimal mixing ratio between bentonite and ZVI. The swell volume of the bentonite-ZVI mixtures did not change with increasing ZVI, and the hydraulic conductivity decreased as the ZVI increased. The reduction rates and removal efficiencies of trichloroethylene (TCE), Chromium(VI), and nitrate increased as ZVI content increased, while there was no practical difference in removal efficiencies between 30% and 100% of ZVI weight contents. Therefore, 30% of the ZVI content was used as the optimal amount in this research since the physical properties, such as swell volume and hydraulic conductivity, as well as the contaminant sorption and reduction were the most efficient. From Raman spectrophotometer analysis, peaks of magnetite, maghemite, and hematite were observed on the surfaces of the bentonites that had been used for the mixtures. Since iron oxides are strong adsorbers of contaminants and magnetites can facilitate the electron transfer of irons, these formations are beneficial for the long-term performance of the iron metals.
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MacAusland S, Chong F, Galper S, Zinkin H, Gass J, Cady B, Chung M, Safaii H, Steinhoff M, Lawn-Tsao L, Ruthazer R, Wazer D. An Attempt to Independently Verify the Utility of the Van Nuys Prognostic Index(VNPI) for DCIS. Int J Radiat Oncol Biol Phys 2005. [DOI: 10.1016/j.ijrobp.2005.07.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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118
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Chung M, Park E, Cho J, Han S, Yoon T, Cha K. Analysis of the Various Conditions That Affect Quality of Immature Oocytes in PCOS Patients With or Without hCG Priming. Fertil Steril 2005. [DOI: 10.1016/j.fertnstert.2005.07.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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119
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Baker HM, Chung M, Fraser JD, Baker EN. Crystal structure of SSL11, a superantigen-related toxin from Staphylococcus aureus. Acta Crystallogr A 2005. [DOI: 10.1107/s0108767305089178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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120
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Balk E, Chung M, Chew P, Ip S, Raman G, Kupelnick B, Tatsioni A, Sun Y, Wolk B, DeVine D, Lau J. Effects of soy on health outcomes. EVIDENCE REPORT/TECHNOLOGY ASSESSMENT (SUMMARY) 2005:1-8. [PMID: 16194125 PMCID: PMC4781302 DOI: 10.1037/e439502005-001] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
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121
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Berenberg JL, Rasmussen T, Cina C, Chung M, Davis J, Donlon S. Efficacy of cancer risk assessment (CRA) through teleconferencing. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.6024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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122
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Park SH, Bang SM, Cho EK, Lee JH, Shin DB, Lee WK, Chung M. Randomized phase II trial of taxanes plus 5-fluorouracil for advanced gastric cancer. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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123
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Bonis PA, Chung M, Tatsioni A, Sun Y, Kupelnick B, Lichtenstein A, Perrone R, Chew P, DeVine D, Lau J. Effects of omega-3 fatty acids on organ transplantation. EVIDENCE REPORT/TECHNOLOGY ASSESSMENT (SUMMARY) 2005:1-11. [PMID: 15810864 PMCID: PMC4781309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
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124
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Gonzales JA, Tawansy K, Hayden A, Patel PJ, Chung M, Evans M. 50 PERIPHERAL RETINAL NON-PERFUSION IN THE SHAKEN BABY SYNDROME. J Investig Med 2005. [DOI: 10.2310/6650.2005.00005.49] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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125
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Wolfing J, Chung M, Carroll J, Williams DR. High resolution retinal imaging of cone-rod dystrophy. J Vis 2004. [DOI: 10.1167/4.11.91] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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