P M Chen

Taipei Veterans General Hospital, Taipei, Taipei, Taiwan

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Publications (121)213.08 Total impact

  • Article: A nation-wide analysis of venous thromboembolism in 497,180 cancer patients with the development and validation of a risk-stratification scoring system.
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    ABSTRACT: The Asian population is thought to have a low risk of venous thromboembolism (VTE), but the epidemiology of VTE in cancer patients remains unclear. The National Health Insurance Research Database of Taiwan was used to find hospitalised patients newly-diagnosed with cancer to determine the incidence of VTE in cancer patients and to identify the risk factors for VTE. Between 1997 and 2005, 497,180 cancer patients were identified. During a median follow-up of 21.3 months (range 0-119.9 months), 5,296 patients developed VTE. The estimated incidence was 185 events per 100,000 person-years. Patients with a prior history of VTE and female patients between the ages of 40 and 80 carried high risk of VTE. The rate of VTE was relatively high in patients with myeloma, prostate cancer, lung cancer, gynaecologic cancers, sarcoma, and metastasis of unknown origin. We developed a risk-stratification scoring system to divide the cancer patients into four discrete risk groups (very low risk, low risk, intermediate, and high risk). The incidence of VTE in each group was 0.5%, 0.9%, 1.5%, and 8.7%, respectively (p < 0.001). This scoring system was validated in a separate patient cohort. In conclusion, VTE is a distinct burden for cancer patients in Taiwan. The risk scoring system could prove helpful in decision-making concerning thromboprophylaxis in cancer patients.
    Thrombosis and Haemostasis 04/2012; 108(2):225-35. · 5.04 Impact Factor
  • Article: How to predict the outcome in mature T and NK cell lymphoma by currently used prognostic models?
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    ABSTRACT: To select an appropriate prognostic model in the treatment of mature T- and natural killer (NK) -cell lymphoma (peripheral T-cell lymphoma (PTCL) and NK-/T-cell lymphoma (NKTCL)) is crucial. This study investigated the usefulness of Ann Arbor staging classification International prognostic index (IPI), prognostic index for T-cell lymphoma (PIT) and International peripheral T-cell lymphoma Project score (IPTCLP). Between 2000 and 2009, 176 patients (122 males) with PTCL and NKTCL were diagnosed and treated from a single institute in Taiwan. The correlation between complete response (CR) rate, 3-year overall survival (OS), early mortality rate and four prognostic models was analyzed. Thirty-one patients received hematopoietic stem cell transplantation (HSCT) and were analyzed separately. Three-year OS rate was 34.7%, and anaplastic large-cell lymphoma harbored better outcome than others. IPI score had the lowest Akaike information criterion value (1081.197) and was the best score in predicting OS and early mortality (P=0.009). Ann Arbor stage classification can predict CR rate more precisely (P=0.006). OS was significantly better in patients who received HSCT, even in patients with unfavorable features compared with chemotherapy alone. All prognostic models were useful to evaluate the outcome of patients with PTCL and NKTCL but IPI score did best in predicting OS in PTCL and PIT score in NKTCL. This study also supported the role of HSCT in patients with high-risk or refractory PTCL or NKTCL.
    Blood Cancer Journal 01/2012; 2:e93.
  • Article: VEGF -460T → C polymorphism and its association with VEGF expression and outcome to FOLFOX-4 treatment in patients with colorectal carcinoma.
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    ABSTRACT: The -460T → C polymorphism of vascular endothelial growth factor (VEGF) gene significantly increases its promoter activity. A pilot study was conducted to assess the influence of this polymorphism on clinicopathological features of patients with colorectal carcinoma. In total, 228 patients were enrolled, including 100 with stage II/III colorectal carcinoma receiving curative surgery and 128 with metastatic disease. An excellent correlation in VEGF -460 genotypes based on white blood cells and tumor tissues existed, but there was no between-group difference in patients with or without colorectal carcinoma. A marked increase in intratumor and circulating VEGF levels were observed in patients with the T/C or C/C genotypes (P < 0.01), which was associated with increased extent of invasion, nodal involvement, poor histological differentiation, subsequent metastasis and shorter survival in stage II/III patients treated with curative surgery (P < 0.01). For patients with metastatic disease, this polymorphism was associated with a lower response rate to FOLFOX-4 (P = 0.03) and shorter survival (P < 0.001). By multivariate analysis, this polymorphism was identified as an independent prognostic factor (P = 0.01). These data suggest that -460T → C polymorphism of VEGF gene, by increasing VEGF expression and subsequent angiogenesis, could be a key determinant for increased tumor recurrence and a poor prognosis of patients with colorectal carcinoma. However, this study is exploratory and is not adjusted for multiple comparisons, requiring independent replication.
    The Pharmacogenomics Journal 06/2011; 11(3):227-36. · 4.54 Impact Factor
  • Article: High incidence of oral squamous cell carcinoma independent of HPV infection after allogeneic hematopoietic SCT in Taiwan.
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    ABSTRACT: Hematopoietic SCT (HSCT) is a well-recognized therapeutic procedure to prolong life and cure patients with life-threatening hematological malignancies; however, the risk of developing secondary carcinoma may increase in long-term survivors. The objective of this study was to determine the incidence and risk factors for secondary squamous carcinoma after HSCT. Between 1984 and 2004, 170 allogeneic HSCT recipients aged >15 years, who had survived for >5 years were enrolled. Demographic data and the characteristics of secondary carcinoma were collected and analyzed for the determination of the incidence and risk of developing secondary carcinoma. Eight patients developed secondary carcinoma, including five oral squamous cell carcinomas, one esophageal, one gastric and one ovarian carcinoma, but no cutaneous carcinomas were detected at a median follow-up of 14.1 years (range, 5.1-23.3 years) after HSCT. The accrual 10-year cumulative incidence of secondary carcinoma was 2.89%. In univariate and multivariate analyses, chronic GVHD and age >40 years at the time of HSCT were both significant risk factors independently associated with the development of secondary carcinoma. Thus, the occurrence of secondary carcinoma is one of the late complications in patients undergoing HSCT. Oral squamous cell carcinoma was more common in our patients after HSCT, indicating the need for lifelong surveillance of the oral cavity. Moreover, because of the relatively long latency in developing secondary carcinoma, extended follow-up is required for a thorough understanding of the incidence and characteristics of secondary carcinoma after HSCT.
    Bone marrow transplantation 04/2011; 46(4):567-72. · 3.00 Impact Factor
  • Article: Impact of bloodstream infections on outcome and the influence of prophylactic oral antibiotic regimens in allogeneic hematopoietic SCT recipients.
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    ABSTRACT: This study aimed to determine the impact of blood stream infections (BSIs) on outcome of allogeneic hematopoietic SCT (HSCT), and to examine the influence of old (non-levofloxacin-containing) and new (levofloxacin-based) prophylactic antibiotic protocols on the pattern of BSIs. We retrospectively enrolled 246 allogeneic HSCT recipients between January 1999 and June 2006, dividing patients into BSI (within 6 months post-HSCT, n=61) and non-BSI groups (n=185). We found that Gram-negative bacteria (GNB) predominated BSI pathogens (54%). Multivariate analyses showed that patients with a BSI, compared with those without, had a significantly greater 6-month mortality (hazard ratio, 1.75; 95% confidence interval, 1.09-2.82; P=0.021) and a significantly increased length of hospital (LOH) stay (70.8 vs 55.2 days, P=0.014). Moreover, recipients of old and new protocols did not have a significantly different 6-month mortality and time-to-occurrence of BSIs. However, there were significantly more resistant GNB to third-generation cephalosporins and carbapenem in recipients of levofloxacin-based prophylaxis. Our data suggest that BSIs occur substantially and impact negatively on the outcome and LOH stay after allogeneic HSCT despite antibiotic prophylaxis. Levofloxacin-based prophylaxis, albeit providing similar efficacy to non-levofloxacin-containing regimens, may be associated with increased antimicrobial resistance.
    Bone marrow transplantation 11/2010; 46(9):1231-9. · 3.00 Impact Factor
  • Article: Hematopoietic SCT activity in Asia: a report from the Asia-Pacific Blood and Marrow Transplantation Group
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    ABSTRACT: The hematopoietic SCT (HSCT) activity in nine Asian countries/regions was surveyed to overview the current situation. Data of 58 113 HSCTs (allogeneic: 63% vs autologous: 37%) performed between 1986 and 2006 by 432 transplant teams were collected. The number of HSCTs has been increasing in the past two decades in most countries/regions. The increase in allogeneic HSCTs is greater than in autologous HSCTs. The proportion of unrelated donors among allogeneic HSCTs in 2006 varied widely from <1% (Iran and Vietnam) to 62% (Japan). The use of each stem cell source, that is, BM, PBSC, cord blood and others (including co-infusion of BM and PBSC), also varied widely (36, 58, 0.1 and 6% in HSCT from related donors, respectively, and 53, 11, 35 and 1% in HSCT from unrelated donors, respectively). HSCTs have been continuously increasing for all indications except for chronic myelogenous leukemia and solid tumors. Hemoglobinopathy is a common indication among non-malignant diseases in many Asian countries/regions except for China, Japan and Korea. This survey clearly shows the recent progress of HSCTs in Asia and also some differences in donor and stem cell selection and disease application among countries/regions.Keywords: hematopoietic SCT; registry; Asia
    Bone Marrow Transplantation 02/2010; 45(12):1682-1691. · 3.75 Impact Factor
  • Article: A new hospice consulting system for terminal cancer patients in transferring to post‐acute care options in Taiwan
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    ABSTRACT: CHANG P.M.-H., LIU Y.-Y.L., CHAO T.-C., LIN H.-L., CHEN M.-B., CHEN P.-M. & CHIOU T.-J. (2010) European Journal of Cancer Care19, 267–272 A new hospice consulting system for terminal cancer patients in transferring to post-acute care options in TaiwanThe terminal cancer patients increase needs for hospice care day by day. A new hospice consulting system has been developed in Taiwan to provide options for terminal cancer patients in choosing a suitable post-acute hospice care while a combined hospice care system is also given by the consulting team in the acute wards. Hereinafter is our report. From March 2005 to January 2006, 313 terminal cancer patients were analysed. These patients had signed consent forms for palliative treatment and had received consultations from the new hospice consulting system. Multivariate analysis showed that the home care patients had better performance status (P = 0.012), less shortness of breath (P = 0.006), less limbs swelling (P = 0.043), less flatulency (P = 0.000) and less constipation (P = 0.018). Among the 162 patients with regular follow-up, the symptoms/signs were significantly improved after intervention of consulting team in pain (P = 0.000), shortness of breath (P = 0.000), difficulty in sleeping (P = 0.002), nausea (P = 0.004), constipation (P = 0.008), changes in skin (P = 0.024) and adoption (P = 0.000). This new system had significant improvement in the terminal cancer patients' symptoms/signs control in acute wards and could contribute to the care quality of home care patients.
    European Journal of Cancer Care 02/2010; 19(2):267 - 272. · 1.17 Impact Factor
  • Article: A new hospice consulting system for terminal cancer patients in transferring to post-acute care options in Taiwan.
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    ABSTRACT: The terminal cancer patients increase needs for hospice care day by day. A new hospice consulting system has been developed in Taiwan to provide options for terminal cancer patients in choosing a suitable post-acute hospice care while a combined hospice care system is also given by the consulting team in the acute wards. Hereinafter is our report. From March 2005 to January 2006, 313 terminal cancer patients were analysed. These patients had signed consent forms for palliative treatment and had received consultations from the new hospice consulting system. Multivariate analysis showed that the home care patients had better performance status (P = 0.012), less shortness of breath (P = 0.006), less limbs swelling (P = 0.043), less flatulency (P = 0.000) and less constipation (P = 0.018). Among the 162 patients with regular follow-up, the symptoms/signs were significantly improved after intervention of consulting team in pain (P = 0.000), shortness of breath (P = 0.000), difficulty in sleeping (P = 0.002), nausea (P = 0.004), constipation (P = 0.008), changes in skin (P = 0.024) and adoption (P = 0.000). This new system had significant improvement in the terminal cancer patients' symptoms/signs control in acute wards and could contribute to the care quality of home care patients.
    European Journal of Cancer Care 09/2009; 19(2):267-72. · 1.17 Impact Factor
  • Article: Haematopoietic stem cell transplantation in Taiwan: past, present, and future.
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    ABSTRACT: In Taiwan, haematopoietic stem cell transplantation (HSCT) has been used to treat patients with haematological diseases since 1983. Thereafter till 2007, there were 2537 patients who had undergone HSCT in more than 15 hospitals. Their diseases included acute myeloid leukaemia in 27.8% of cases, non-Hodgkin's lymphoma 23.3%, acute lymphoblastic leukaemia 12.8%, chronic myeloid leukaemia 11.9%, severe aplastic anaemia 8.7%, and multiple myeloma 4.1%. Most of the cases received myeloablative conditioning regimens. More than 15% of cases received non-myeloablative regimens, and the mean age of these cases was at least 10 years older than those who received myeloablative regimens. The types of graft included peripheral blood (60.4%) and bone marrow (32.0%). A total of 35% of patients received autologous grafts. Of 1557 allogeneic HSCT patients, 338 (21.7%) received grafts from unrelated donors. Cord blood transplantation has been successfully performed in paediatric patients with thalassaemia major and with a large body size, and adult patients. The incidence of acute graft-versus-host disease was relatively low in Taiwan. On the contrary, a relatively higher proportion of hepatitis B carrier in the recipients had led to a higher incidence of reactivation hepatitis, which was markedly decreased following lamivudine prophylaxis. In conclusion, HSCT has become a routine therapy for major medical centres in Taiwan. Our unique experiences in the past decades also contributed to the progress of HSCT. With the establishment of professional association and patient supportive groups, we hope we can fully improve our daily practice and clinical as well as basic research in HSCT.
    Hong Kong medical journal = Xianggang yi xue za zhi / Hong Kong Academy of Medicine 07/2009; 15(3 Suppl 3):13-6.
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    Article: Hepatitis B infection in haematopoietic stem cell transplantation: still unresolved.
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    ABSTRACT: Impact of hepatitis B virus (HBV) infection on haematopoietic stem cell transplantation (HSCT) was reported earlier since late 1980s. It was shown that changing patterns of HBV serological markers was accompanied by variable severity of hepatitis after transplantation. Recipient's hepatitis B virus surface antigen (HBsAg) positivity was not considered an absolute contra-indication to allogeneic HSCT. However, HBsAg positivity was an important risk factor of reactivation hepatitis after transplantation, especially in allogeneic setting. Managing HBV reactivation in HSCT recipients was not successful till the availability of lamivudine since mid-1990s. For HBsAg-positive recipients, prophylactic lamivudine has been shown to significantly reduce reactivation hepatitis. As for HBsAg-negative recipients, there have been a small number of patients who develop so-called reverse seroconversion, that is, appearance of HBsAg after transplantation. In addition to chronic graft-versus-host disease, the risk was also high in allogeneic HSCT recipients who received fludarabine-antithymocyte globulin-containing conditioning regimens. The HBV is harboured earlier in the recipients before transplantation rather than transmitted via transfusion. At present, the optimal duration of lamivudine prophylaxis is not well-defined, and there are several fatal cases associated with early withdrawal and resistant HBV mutants. In conclusion, in HBV-endemic areas, the war between HBV and HSCT recipients continued even though several anti-HBV agents and molecular detection techniques are available. It deserves additional effort to overcome and also presents a chance to elucidate underlying mechanisms of HBV immunity, which are not easily studied in non-HSCT setting.
    Hong Kong medical journal = Xianggang yi xue za zhi / Hong Kong Academy of Medicine 07/2009; 15(3 Suppl 3):42-4.
  • Article: Candidemia in cancer patients: impact of early removal of non-tunneled central venous catheters on outcome.
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    ABSTRACT: To explore the impact of retention of non-tunneled central venous catheters (CVCs) on survival in candidemic cancer patients, where CVCs are commonly used and essential. A second object was to determine whether early CVC removal would benefit a subset of cancer patients. We retrospectively evaluated 92 cancer patients who had a single, non-tunneled CVC in place. Patients were grouped according to CVC retention or removal; the later group was subdivided into early (CVC removed <or=72h after candidemia onset) and late removal. A Cox regression model was used for determining risk factors of adverse outcome and Kaplan-Meier analyses for comparing in-hospital 3-30 day survival among subgroups. Baseline characteristics were comparable between CVC retention (n=20) or removal (n=72) groups. CVC retention was a significant risk factor of poor outcome, independent of other significant prognostic host factors (hazard ratio 7.15, 95% confidence interval 3.51-14.53, p<0.001). Patients of early CVC removal (n=40) had significant better survival than those of late removal (n=32) (p<0.001). The results suggest that retention of CVCs has a negative impact on survival in candidemic cancer patients, and that early CVC removal should be considered in a subset of cancer patients with candidemia.
    The Journal of infection 01/2009; 58(2):154-60. · 4.13 Impact Factor
  • Article: Current status of hematopoietic stem cell transplantation in Taiwan.
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    ABSTRACT: In Taiwan, hematopoietic SCT (HSCT) has been used to treat patients with hematological diseases since 1983. Since then, more than 2200 patients have undergone HSCT in 15 large hospitals. The disease entities included acute leukemia in 37% of cases, non-Hodgkin's lymphoma in 26%, CML in 10%, multiple myeloma in 7% and severe aplastic anemia in 6%. The conditioning regimens used were mainly myeloablative (84% of cases). Non-myeloablative regimens were fludarabine-based. The average age of allogeneic recipients was at least 10 years older than those in the era before their application. The grafts of all patients were derived from peripheral blood in 85% of cases, BM in 13% and cord blood (CB) in 2%. Forty percent of HSCT patients received autologous grafts, whereas more than 25% of allogeneic HSCT patients received grafts from unrelated donors, and overall, there were more than 200 Taiwan HSCT recipients. Currently, CB has been used successfully in pediatric patients with thalassemia major and also in adult patients with hematological malignancy. After transplantation, there was a relatively lower prevalence of acute GVHD. However, a relatively higher proportion of hepatitis B carriers in the recipients had led to a higher incidence of viral reactivation and clinical hepatitis, which was dramatically decreased following lamivudine prophylaxis. In conclusion, HSCT has been successfully adapted to routine clinical care in Taiwan. Several important findings contributing to the progress of HSCT in the past two decades have also been noticed on this island.
    Bone Marrow Transplantation 08/2008; 42 Suppl 1:S133-S136. · 3.75 Impact Factor
  • Article: Thymosin beta4 triggers an epithelial-mesenchymal transition in colorectal carcinoma by upregulating integrin-linked kinase.
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    ABSTRACT: The epithelial-mesenchymal transition (EMT) is crucial for the invasion and metastasis of many epithelial tumors including colorectal carcinoma (CRC). In the present study, a scattering and fibroblastic morphology with reduced intercellular contacts was found in the SW480 colon cancer cells overexpressing the gene encoding thymosin beta4 (Tbeta4), which was accompanied by a loss of E-cadherin as well as a cytosolic accumulation of beta-catenin, two most prominent markers of EMT. Whereas E-cadherin downregulation was likely to be accounted by a ZEB1-mediated transcriptional repression, the accumulation of beta-catenin was a result of glycogen synthase kinase-3beta inactivation mediated by integrin-linked kinase (ILK) and/or its downstream effector, Akt. Intriguingly, ILK upregulation in Tbeta4-overexpressing SW480 cells seemed to be attributed mainly to a stabilization of this kinase by complexing with particularly interesting new Cys-His protein (PINCH) more efficiently. In the meantime, a strong correlation between the expression levels of Tbeta4, ILK and E-cadherin in CRC patients was also revealed by immunohistochemical analysis. Taken together, these data suggest a novel role of Tbeta4 in promoting CRC progression by inducing an EMT in tumor cells via upregulating ILK and consequentially its signal transduction.
    Oncogene 05/2007; 26(19):2781-90. · 6.37 Impact Factor
  • Article: Overexpression of NBS1 induces epithelial-mesenchymal transition and co-expression of NBS1 and Snail predicts metastasis of head and neck cancer.
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    ABSTRACT: Major causes of head and neck squamous cell carcinoma (HNSCC)-related deaths are cervical node and distant metastasis. We previously demonstrated that overexpression of the DNA double-strand break repair protein Nijmegen breakage syndrome 1 (NBS1) is a prognostic marker of advanced HNSCCs. Epithelial-mesenchymal transition (EMT) was demonstrated to be the major mechanism responsible for mediating invasiveness and metastasis of late-stage cancers. We therefore investigated the role of NBS1 overexpression in mediating EMT and metastasis. NBS1 overexpression was associated with metastasis of HNSCC patients using tissue microarray-immunohistochemistry approach. Induction of EMT was observed in an NBS1-overexpressing HNSCC cell line (FADUNBS), whereas short-interference RNA (siRNA)-mediated repression of endogenous NBS1 reversed the shift of EMT markers. Increased migration/invasiveness of FADUNBS was shown by in vitro and in vivo assays. NBS1 overexpression upregulated the expression of an EMT regulator Snail and its downstream target matrix metalloproteinase-2. EMT phenotypes and increased migration/invasiveness of FADUNBS cells were reversed by siRNA-mediated repression of Snail expression or a phosphatidylinositol 3-kinase-specific inhibitor. In HNSCC samples, co-expression of NBS1/Snail in primary tumors correlated with metastasis and the worst prognosis. These results indicate that NBS1 overexpression induces EMT through the upregulation of Snail expression, and co-expression of NBS1/Snail predicts metastasis in HNSCCs.
    Oncogene 04/2007; 26(10):1459-67. · 6.37 Impact Factor
  • Article: Colorectal carcinoma: from tumorigenesis to treatment.
    W S Wang, P M Chen, Y Su
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    ABSTRACT: Colorectal carcinoma (CRC) is a complicated and often fatal genetic disease. Fortunately, owing to rapid expansion of knowledge and technology development in oncology, much progress has been made regarding the diagnosis, understanding of the molecular genetics and malignant progression, as well as the novel regimens of CRC. In this review, we summarize the staging system, the most critical genetic and epigenetic alterations, the pleiotropic effects of MMP-7, the controversial roles of Hedgehog signaling, the intriguing involvement of thymosin beta-4, and the possible contribution of the putative colon (cancer) stem cells in CRC tumorigenesis. Current treatments as well as several potentially applicable therapeutic strategies for CRC are also discussed.
    Cellular and Molecular Life Sciences CMLS 04/2006; 63(6):663-71. · 6.57 Impact Factor
  • Article: Exudative bullous retinal detachment after peripheral blood stem cell transplantation.
    Eye 06/2005; 19(5):603-6. · 1.85 Impact Factor
  • Article: Relatively favorable outcomes of post-transplant pulmonary function in patients with chronic myeloid leukemia receiving non-myeloablative allogeneic hematopoietic stem cell transplantation.
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    ABSTRACT: Pulmonary function tests were performed in 20 patients with chronic myeloid leukemia before and after human leukocyte antigen-matched allogeneic sibling hematopoietic stem cell transplantation (HSCT) to identify any conditioning treatment effects on post-transplant function from January 1995 to December 2002. Of 20 patients, eight received non-myeloablative conditioning treatment and 12 received conventional myeloablative conditioning treatment. Pulmonary function tests including forced vital capacity (FVC), forced expiratory volume in the first second (FEV1), and diffusion capacity for carbon monoxide (DLCO) were performed pretransplant, 6 and 12 months post-transplant. Possible pre-HSCT and post-HSCT risk factors were evaluated for association with pulmonary function. The results showed that myeloablative conditioning treatment had greater negative impact on FEV1, FVC, and DLCO than non-myeloablative conditioning therapy. We conclude that non-myeloablative allogeneic HSCT may apply a better transplant choice in patients who need special concern with post-transplant pulmonary function changes.
    European Journal Of Haematology 03/2005; 74(2):152-7. · 2.61 Impact Factor
  • Article: Erythema nodosum associated with carcinoid tumour.
    Clinical and Experimental Dermatology 08/2004; 29(4):426-7. · 1.20 Impact Factor
  • Article: Radiation therapy versus chemotherapy as initial treatment for localized nasal natural killer (NK)/T-cell lymphoma: a single institute survey in Taiwan.
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    ABSTRACT: To clarify the role of intention to treat for patients with localized nasal natural killer (NK)/T-cell lymphoma, and to determine the prognostic factors for these patients. We conducted a retrospective review of 46 patients with localized nasal NK/T-cell lymphomas treated at a single institute between January 1988 and July 2002. The type of intended treatment was a significant factor for overall survival (OS) (5-year OS: RT versus CT = 83.3% versus 28.6%, P = 0.0269) or failure-free survival (FFS) (5-year FFS: RT versus CT = 83.3% versus 27.1%, P = 0.0247). In the intended chemotherapy group, salvage with radiotherapy was superior to chemotherapy alone for OS (5-year OS: 42.2% versus 20.0%, P = 0.0252) or FFS (5-year FFS: 41.0% versus 20.0%, P = 0.0352). On multivariate analysis, both N stage and serum lactate dehydrogenase level were independent factors for OS and FFS. No radiotherapy was an independent adverse factor for OS; advanced T stage and more than one extranodal involvement were independent adverse factors for FFS. Patients with localized nasal NK/T-cell lymphomas were better managed with radiotherapy as front-line therapy. The advantage of radiotherapy persisted even as palliative therapy after chemotherapy.
    Annals of Oncology 05/2004; 15(4):618-25. · 6.43 Impact Factor
  • Article: Hematopoietic stem cell transplantation for severe aplastic anemia--experience of an institute in Taiwan.
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    ABSTRACT: Hematopoietic stem cell transplantation (HSCT) is an accepted treatment strategy for patients with severe aplastic anemia (SAA). We report our experience in a general hospital in Taiwan. From March 1985 to July 2001, 79 consecutive SAA patients, 46 male and 33 female, with a median age of 22 (4-43) years, received 80 courses of transplantation. Cyclophosphamide and total body radiation were used for the conditioning regimen, and cyclosporine-A and methotrexate for graft-versus-host disease (GVHD) prevention. Patients were followed for a median of 39 months (from 8 days to 194 months). Myeloid and platelet engraftment occurred in a median of 15 (8-27) days and 18 (8-77) days, respectively. Three patients had primary and three patients secondary graft failure. Five patients (6.8%) had grade II-IV acute GVHD in 73 evaluable patients. Chronic GVHD occurred in 23 (34.8%) patients, with extensive stage in six. Only two patients had CMV disease. The projected 3- and 5-year overall survival rates estimated by the Kaplan-Meier method were 76.08 and 74.13%, respectively. Age at transplant, non-sibling donor, mononuclear cell dose, grade II-IV acute GVHD, interval from diagnosis to transplant, and red blood cell and platelet transfusion before transplant were poor prognostic factors for overall survival by univariate analysis. Grade II-IV acute GVHD was the only prognostic factor affecting overall survival after multivariate Cox regression analysis (P=0.040). In conclusion, SAA patients receiving HSCT have good long-term survival. The low incidence of acute GVHD in our patients may be related to ethnicity.
    Annals of Hematology 02/2004; 83(1):38-43. · 2.62 Impact Factor