Nab-paclitaxel plus capecitabine as first-line treatment for advanced biliary tract cancers:An open-label,non-randomized,phase II clinical trial

BACKGROUND Biliary tract cancers(BTCs)are a heterogeneous group of tumors with high malignancy,poor prognosis,and limited treatment options.AIM To explore the efficacy and safety of nab-paclitaxel plus capecitabine as first-line treatment for advanced and metastatic BTCs.METHODS This open-label,non-randomized,double-center,phase II clinical trial recruited systemic therapy-naive patients with unresectable or metastatic BTCs between April 2019 and June 2022 at Beijing Cancer Hospital and the First Hospital of China Medical University.Eligible patients were administered nab-paclitaxel(150 mg/m^(2),day 1)and capecitabine(2000 mg/m^(2),twice daily,days 1-7)in 14-day cycles until experiencing intolerable toxicity or disease progression.The primary outcome was the objective response rate(ORR).The secondary outcomes included the disease control rate(DCR),overall survival(OS),progression-free survival(PFS),and safety.RESULTS A total of 44 patients successfully completed the trial,with a median age of 64.00 years(interquartile range,35.00-76.00),and 26(59.09%)were females.Tumor response assessment was impeded for one patient due to premature demise from tumor hemorrhage.Among the remaining 43 patients undergoing at least one imaging assessment,the ORR was 23.26%[95%confidence interval(CI):11.80%-38.60%],and the DCR was 69.77%(95%CI:53.90%-82.80%).The median OS was 14.1 months(95%CI:8.3-19.9),and the median PFS was 4.4 months(95%CI:2.5-6.3).A total of 41 patients(93.18%)experienced at least one adverse event(AE),with 10 patients(22.73%)encountering grade≥3 AEs,and the most frequent AEs of any grade were alopecia(79.50%),leukopenia(54.55%),neutropenia(52.27%),and liver dysfunction(40.91%),and no treatment-related deaths were documented.CONCLUSION Nab-paclitaxel plus capecitabine may be an effective and safe first-line treatment strategy for patients with advanced or metastatic BTCs.

Human umbilical cord mesenchymal stem cells to treat spinal cord injury in the early chronic phase: study protocol for a prospective, multicenter, randomized, placebo-controlled, single-blinded clinical trial

Human umbilical cord mesenchymal stem cells(hUC-MSCs)support revascularization,inhibition of inflammation,regulation of apoptosis,and promotion of the release of beneficial factors.Thus,they are regarded as a promising candidate for the treatment of intractable spinal cord injury(SCI).Clinical studies on patients with early chronic SCI(from 2 months to 1 year post-injury),which is clinically common,are rare;therefore,we will conduct a prospective,multicenter,randomized,placebo-controlled,single-blinded clinical trial at the Third Affiliated Hospital of Sun Yat-sen University,West China Hospital of Sichuan University,and Shanghai East Hospital,Tongji University School of Medicine,China.The trial plans to recruit 66 early chronic SCI patients.Eligible patients will undergo randomization at a 2:1 ratio to two arms:the observation group and the control group.Subjects in the observation group will receive four intrathecal transplantations of stem cells,with a dosage of 1×106/kg,at one calendar month intervals.Subjects in the control group will receive intrathecal administrations of 10 mL sterile normal saline in place of the stem cell transplantations.Clinical safety will be assessed by the analysis of adverse events and laboratory tests.The American Spinal Injury Association(ASIA)total score will be the primary efficacy endpoint,and the secondary efficacy outcomes will be the following:ASIA impairment scale,International Association of Neural Restoration-Spinal Cord Injury Functional Rating Scale,muscle tension,electromyogram,cortical motor and cortical sensory evoked potentials,residual urine volume,magnetic resonance imaging–diffusion tensor imaging,T cell subtypes in serum,neurotrophic factors and inflammatory factors in both serum and cerebrospinal fluid.All evaluations will be performed at 1,3,6,and 12 months following the final intrathecal administration.During the entire study procedure,all adverse events will be reported as soon as they are noted.This trial is designed to evaluate the clinical safety and efficacy of subarachnoid transplantation of hUC-MSCs to treat early chronic SCI.Moreover,it will establish whether cytotherapy can ameliorate local hostile microenvironments,promote tracking fiber regeneration,and strengthen spinal conduction ability,thus improving overall motor,sensory,and micturition/defecation function in patients with early chronic SCI.This study was approved by the Stem Cell Research Ethics Committee of the Third Affiliated Hospital of Sun Yat-sen University,China(approval No.[2018]-02)on March 30,2018,and was registered with ClinicalTrials.gov(registration No.NCT03521323)on April 12,2018.The revised trial protocol(protocol version 4.0)was approved by the Stem Cell Research Ethics Committee of the Third Affiliated Hospital of Sun Yat-sen University,China(approval No.[2019]-10)on February 25,2019,and released on ClinicalTrials.gov on April 29,2019.

Quality Management Model for Phase I Clinical Drug Trials:A Structural Equation Model

This study aimed to construct a quality management model for phase I clinical drug trials.A cross-sectional survey was conducted and data were collected from 604 respondents at 69 institutions in China engaged in phase I clinical drug trials.Exploratory and confirmatory factor analyses were used to develop the survey tool.Structural equation modeling was used to construct a quality management model for phase I clinical drug trials.The results showed that the final survey tool had good reliability and validity(Cronbach’sα=0.938,root mean square error of approximation=0.074,comparative fit index=0.962,and Tucker—Lewis index=0.955).The model included five dimensions:government regulation,industry management,medical institution management,research team management,and contract research organization(CRO)management.In total,22 measurement items were obtained.The structural equation model indicated government regulation,industry management,medical institution management,and CRO management significantly affected the quality of phase I clinical drug trials(β=0.195,β=0.331,β=0.279,andβ=−0.267,respectively;P<0.05).Research team management had no effect on the quality of trials(β=0.041,P=0.610).In conclusion,the model is valuable for identifying factors influencing phase I clinical drug trials and guiding quality management practices.

Specification of phase Ⅰ of new drugs' clinical tolerance trials

Phase Ⅰ of clinical trials is the first stage of clinical pharmacology and body safety evaluation,including body tolerance test and pharmacokinetics test.The aim is providing evidence for dosage regimen and be the cornerstone of the preliminary assessment of efficacy and safety of phase Ⅱ of clinical trials.This text discussed the technique and requirement of phase Ⅰ of new drugs' clinical tolerance trials.

PHASE II CLINICAL TRIAL OF LASTET CAPSULE IN COMBINATION CHEMOTHERAPY OF MALIGNANT TUMORSIN CHINA

This study reports the efficacy of prolonged administration of oral etoposide in the treatment of 86 cases with solid tumor,malignant lymphoma and other cancer.The oral etoposide used was the Lastet capsule (Las-c).An overall response rate(RR)of 62.8% was achieved with CR rate being 23.3% and PR rate 39.5%. Different combination chemotherapy regimens led to different response rates but no significant difference was found. The Las-C containing regimens used in this study have not caused any serious side effects.

Clinical Trial Phases

Developers of drugs, biologicals, and medical devices must ensure product safety, demonstrate medical benefit in people, and mass produce the product. Preclinical development starts before clinical trials and the main goals are to determine safety and effectiveness of the intervention. If preclinical studies show that the therapy is safe and effective, clinical trials are started. Clinical trial phases are steps in the research to determine if an intervention would be beneficial or detrimental to humans and include Phases 0, I, II, III, IV, and V clinical studies. Understanding the basis of clinical trial phases will help researchers plan and implement clinical study protocols and, by doing so, improve the number of therapies coming to market for patients.

Current Role of Platelet Glycoprotein Ⅱ b/Ⅲ a Receptor Inhibitors in Clinical Trials of Cardiovascular Diseases

Thrombosis formation on disrupted atherosclerotic plaque is the most common acuse of cardiovascular diseases, in the pathophysiology, increased platelet reactivity is a descriptor of the risk of cardiovascular events in healthy persons and in patients with overt coronary artery disease. Regardless of the stimulus for activation platelet-platelet interation and thrombus formation is ultimately regulated through the GP Ⅱ b/Ⅲ a receptor

Multicenter phase Ⅱ trial of modified FOLFIRINOX in gemcitabine-refractory pancreatic cancer

AIM To evaluate the efficacy and safety of modified FOLFIRINOX as a second-line treatment for gemcitabine(GEM)-refractory unresectable pancreatic cancer(PC).METHODS This study was a prospective, multicenter, one-arm, open-label, phase Ⅱ trial. Patients with unresectable PC, who showed disease progression during GEMbased chemotherapy were enrolled. All patients were administered FOLFIRINOX with reduced irinotecan and oxaliplatin(RIO; irinotecan 120 mg/m^2 and oxaliplatin 60 mg/m^2), which was set according to the phase Ⅰ study of FOLFIRINOX. The objective response rate(ORR), disease control rate(DCR), progressionfree survival(PFS), overall survival(OS), adverse events were evaluated. Additionally, changes in quality of life(QoL) were assessed using a questionnaire on QoL.RESULTS Between August 2015 and May 2016, a total of 48 patients were enrolled. The median follow-up time was 259 d with a median of 8.5 cycles. The ORR and DCR were 18.8% and 62.5%, respectively, including one patient who showed complete remission. The median PFS was 5.8 mo [95% confidence interval(CI): 3.7-7.9] and median OS was 9.0 mo(95%CI: 6.4-11.6). Neutropenia(64.6%) was the most common grade 3-4 adverse event, followed by febrile neutropenia(16.7%). Although 14.6% of patients experienced grade 3 fatigue, most non-hematologic AEs were under grade 2. In the QoL analysis, the global health status score before treatment was not different from the score at the last visit after treatment(45.43 ± 22.88 vs 48.66 ± 24.14, P = 0.548).CONCLUSION FOLFIRINOX with RIO showed acceptable toxicity and promising efficacy for GEM-refractory unresectable PC. However, this treatment requires careful observation of treatment-related hematologic toxicities.

Phase Ⅱ open-label study of recombinant circularly permuted TRAIL as a single-agent treatment for relapsed or refractory multiple myeloma

Background: Despite the recent development of new therapies, multiple myeloma(MM) remains an incurable disease. Thus, new, efective treatments are urgently needed, particularly for relapsed or refractory MM(RRMM). In an earlier phase I study, a novel form of recombinant human Apo2L/tumor necrosis factor-related apoptosis-inducing ligand(TRAIL) that is currently in clinical development for the treatment of hematologic malignancies, i.e., circularly permuted TRAIL(CPT), was well tolerated at a dose of 2.5 mg/kg per day and showed promising preliminary activity in patients with RRMM. This phase II, open-label, multicenter study further investigated the eicacy and safety of 2.5-mg/kg per day CPT as single-agent therapy for patients with RRMM.Methods: Patients with RRMM were treated once daily with CPT(2.5 mg/kg, intravenously) for 14 consecutive days for each 21-day cycle. Clinical response and toxicity were assessed after each treatment cycle.Results: Twenty-seven patients received CPT. Using the European Group for Blood and Marrow Transplantation criteria, we calculated the overall response rate of 33.3% with 1 near-complete response(n CR) and 8 partial responses(PRs). The clinical beneit rate(48.1%) included 1 nCR, 8 PRs, and 4 minimal responses. The most common treatmentrelated adverse events(TRAEs) were fever, aspartate aminotransferase elevation, alanine aminotransferase elevation, leucopenia, rash, neutropenia, and thrombocytopenia. We graded toxicity using the Common Toxicity Criteria for Adverse Events, version 3.0, and determined that 37.0% of patients had at least 1 grade 3–4 TRAE.Conclusions: CPT as a single agent can elicit a response in patients with RRMM and is well tolerated. Further clinical investigation is warranted.

Study protocol of the Asian XELIRI ProjecT(AXEPT):a multinational,randomized,non-inferiority,phase Ⅲ trial of second-line chemotherapy for metastatic colorectal cancer, comparing the eicacy and safety of XELIRI with or without bevacizumab versus FOLFIRI w

Background: Capecitabine and irinotecan combination therapy(XELIRI) has been examined at various dose levels to treat metastatic colorectal cancer(m CRC). Recently, in the Association of Medical Oncology of the German Cancer Society(AIO) 0604 trial, tri?weekly XELIRI plus bevacizumab, with reduced doses of irinotecan(200 mg/m^2 on day 1) and capecitabine(1600 mg/m^2 on days 1–14), repeated every 3 weeks, has shown favorable tolerability and eicacy which were comparable to those of capecitabine and oxaliplatin(XELOX) plus bevacizumab. The doses of capecit?abine and irinotecan in the AIO trial are considered optimal. In a phase I/II study, XELIRI plus bevacizumab(BIX) as second?line chemotherapy was well tolerated and had promising eicacy in Japanese patients.Methods: The Asian XELIRI Projec T(AXEPT) is an East Asian collaborative, open?labelled, randomized, phase Ⅲ clinical trial which was designed to demonstrate the non?inferiority of XELIRI with or without bevacizumab versus standard FOLFIRI(5?fluorouracil, leucovorin, and irinotecan combination) with or without bevacizumab as second?line chemo?therapy for patients with m CRC. Patients with 20 years of age or older, histologically conirmed m CRC, Eastern Coop?erative Oncology Group performance status 0–2, adequate organ function, and disease progression or intolerance of the irst?line regimen will be eligible. Patients will be randomized(1:1) to receive standard FOLFIRI with or with?out bevacizumab(5 mg/kg on day 1), repeated every 2 weeks(FOLIRI arm) or XELIRI with or without bevacizumab(7.5 mg/kg on day 1), repeated every 3 weeks(XELIRI arm). A total of 464 events were estimated as necessary to show non?inferiority with a power of 80% at a one?sided α of 0.025, requiring a target sample size of 600 patients. The 95% conidence interval(CI) upper limit of the hazard ratio was pre?speciied as less than 1.3.Conclusion: The Asian XELIRI Projec T is a multinational phase III trial being conducted to provide evidence for XELIRI with or without bevacizumab as a second?line treatment option of mCRC.

A Phase II Study of Antineoplastons A10 and AS2-1 in Children with High-Grade Glioma. Final Report (Protocol BT-06), and Review of Recent Trials

Standard treatment for high-grade glioma involves surgical resection followed by radiation therapy and temozolomide. Unfortunately, there are no standard treatment recommendations after recurrence and new therapies are needed for patients whose tumor recurs after first-line treatment. This single-arm, two-stage, interventional Phase II study evaluated the efficacy and safety of a combination of antineoplastons A10 and AS2-1. Nineteen patients were enrolled in the study (safety population), but fifteen patients with a median age of 9.4 years who met eligibility criteria were evaluated. The majority of subjects (12/15) were Caucasian and 8/15 (53%) were female. More than half (53%) of patients were diagnosed with glioblastoma and 33% with anaplastic astrocytoma. All patients had failed standard therapy including surgery, radiation, and chemotherapy. Antineoplastons were administered intravenously every four hours (median dose of A10 6.9 g/kg/d and AS2-1 0.30 g/kg/d) until objective response was documented and thereafter for a further 8 months. Clinical evaluations were performed every 8 weeks. All patients enrolled in the study were included in the safety analysis but only patients fulfilling the inclusion criteria were included in the efficacy evaluation. The duration of treatment with antineoplastons ranged from 2 weeks to 120 weeks. A complete response was documented in 2/15 (13%), partial response in 2/15 (13%), stable disease in 3/15 (20%). Progression-free survival at six months was 47% and overall survival (OS) at one year was 33.3%. One patient (6.7%) survived 10 years from treatment start. A small group of patients suffered reversible Grade 3 and 4 toxicities including hypernatremia 2/19 (11%) and decrease of neutrophils 1/19 (5%). There were no chronic toxicities. There was improvement of quality of life in patients who had objective response. It is concluded that antineoplastons show efficacy with an acceptable profile in this cohort of patients with recurrent high-grade glioma.

Toward phase 4 trials in heart failure: A social and corporate responsibility of the medical profession

Congestive heart failure(CHF) is a chronic condition, requiring polypharmacy, allied health supports and regular monitoring. All these factors are needed to ensure compliance and to deliver the positive outcomes demonstrated from randomized controlled trials. Unfortunately many centers around the world are unable to match trial level support. The outcomes for many communities are thus unclear. Research design factors in post-marketing surveillance to address this issue. Phase 4 studies is the name given to trials designed to obtain such community level data and thus address issues of external validity. CHF phase 4 studies are relatively underutilized. We feel the onus for this research lies with the health profession. In this commentary we provide arguments as to why phase 4 studies should be viewed as a social and corporate responsibility of health professional that care for clients with CHF.

A multicenter phase II trial of domestic product of zoledronic acid in the treatment of malignant hypercalcemia

Objective:To evaluate the effect and safety of clinical use of zoledronic acid in the treatment of malignant hypercalcemia.Methods:A multi-center,open phase II clinical trial was conducted in 15 cases with malignant hypercalcemia who received zoledronic acid intravenously for 15 min.The level of blood calcium and side effects were recorded regularly within 28 days after injection.Results:One case was dropped out due to bad compliance.The complete response rate(the corrected serum calcium was reduced to normal level)was 100.00%(14/14).The medium time of complete response rate was 5.07 days.The medium maintain time was 22.30 days.Slight,or moderate fever was observed.Conclusion:Zoledronic acid can effectively reduce the malignant hypercalcemia.The use of zoledronic acid appears to be safety and convenient.

新型重组人肿瘤坏死因子治疗非小细胞肺癌的多中心Ⅱ期临床随机试验

目的 观察比较国产新型重组人肿瘤坏死因子 (nrhTNF)加化疗和单纯化疗治疗非小细胞肺癌(NSCLC)的临床疗效和不良反应。方法 采用多中心、随机对照试验将 90例NSCLC患者随机分为试验组和对照组 ,两组各 45例患者。试验组在化疗的同时 ,分别在第 1～ 7天 ,第 11～ 17天肌肉注射nrhTNF 4×10 6U/m2 ,2 1天为一周 ,连用二个周期。对照组仅给予化疗 ,2 1天为一周期 ,连用二个周期。试验结束后比较试验组和对照组的有效率和不良反应。结果 试验组和对照组各有 3例患者因依从性原因出组 ,各有 42例可供临床疗效分析和不良反应分析。试验组有效率为 47.62 % ( 2 0 /4 2 ) ,对照组为 19.0 5 % ( 8/4 2 ) (P =0 .0 0 2 )。试验组治疗后KPS评分为 85 .0 2± 10 .74,对照组为 81.3 5± 9.63 (P =0 .0 3 8)。试验组和对照组Ⅲ+Ⅳ度不良反应无显著差异 (P >0 .0 5 )。与nrhTNF有关的不良反应主要有轻度发热、感冒样症状 ,注射局部疼痛 ,注射局部红肿硬结 ,均不需作特殊处理 ,治疗结束后均能自行消失。结论 国产nrhTNF联合化疗药物治疗NSCLC能显著提高化疗的有效率 ,改善患者的生活质量。nrhTNF临床应用安全、有效 ,不良反应轻微 。

国产奥沙利铂治疗大肠癌Ⅱ期临床研究

目的:评价国产注射用奥沙利铂单药及与5-氟尿嘧啶(5-Fu)-四氢叶酸(CF)联合用于治疗大肠癌的疗效及毒副反应。方法:收治带瘤大肠癌患者49例,按随机方法,分别入单药组11例(单用奥沙利铂),联合组20例(奥沙利铂+5—Fu+CF),和对照组18例(5—Fu+CF)。结果:单药组有效率27.3％,联合组30.0％,对照组5.6％,单药组和联合组疗效高于对照组,且奥沙利铂对大肠癌常见转移部位如肝脏、腹腔淋巴结、盆腔及肺脏均可见临床疗效,毒副反应主要为神经感觉异常,其中重度异常单药组为9％,联合组为10％。结论:国产注射用奥沙利铂单用或联合5—Fu、CF治疗大肠癌疗效肯定,耐受性良好,值得临床进一步研究和扩大应用。

国产英卡膦酸二钠治疗恶性肿瘤骨转移疼痛或/和高钙血症的Ⅱ期临床研究

目的:评价国产英卡膦酸二钠治疗恶性肿瘤骨转移疼痛或/和高钙血症的疗效和安全性。方法:采用多中心、随机阳性药平行对照研究方法,将212例恶性肿瘤骨转移病人分为试验组和对照组,每组106例,分别给予国产英卡膦酸二钠10 mg与帕米膦酸钠90 mg,观察其疗效和毒副作用。高钙血症治疗采用非随机临床研究。结果:国产英卡膦酸二钠治疗骨转移疼痛的有效率为70.19%,生活质量改善有效率为50.96%。对照组骨转移疼痛治疗有效率为67.62%,生活质量改善有效率为51.43%。试验组在疼痛缓解率和生活质量改善上与对照组均无显著差异。试验组不良反应发生率明显低于对照组(26.42%vs46.23%),主要为Ⅰ、Ⅱ度发热,两组有非常显著差异(P<0.01)。6例肿瘤骨转移伴高钙血症的病人使用英卡膦酸二钠后,有3例第3天血钙降至正常,2例第5天血钙降至正常,1例第14天血钙降至正常。结论:国产英卡膦酸二钠治疗恶性肿瘤骨转移疼痛疗效显著,安全可靠,治疗高钙血症有效,值得临床推广使用。

国产唑来膦酸治疗肿瘤高钙血症多中心Ⅱ期临床观察

目的:评价国产注射用唑来膦酸治疗肿瘤高钙血症的临床疗效和安全性。方法:采用多中心、开放临床研究对15例肿瘤性高钙血症患者给予唑来膦酸4mg静脉滴注15min治疗,在28天内定期观察血钙的变化和不良反应。结果:1例患者因依从性差出组,可评价疗效14例。有效缓解率,即校正血钙降至正常,为100%(14/14),有效缓解中位时间为5.07天,缓解的中位维持时间22.30天。不良反应主要有轻中度发热。结论:国产注射用唑来膦酸能够快速、有效、持久的降低恶性肿瘤高钙血症,使用安全、方便。

葛酮通络胶囊治疗脑梗死恢复期瘀血痹阻脉络证的Ⅱ期临床研究

目的评价葛酮通络胶囊治疗脑梗死恢复期瘀血痹阻脉络证的安全性及有效性。方法随机、双盲双模拟、阳性平行对照、多中心研究方法进行葛酮通络胶囊的Ⅱ期临床试验。受试者共210例,A组104例给予葛酮通络胶囊500 mg+安慰剂,2次/d;B组106例给予血塞通片100 mg+安慰剂,2次/d。治疗28 d后,观察并评价其临床疗效和安全性。结果 A组和B组中风病总有效率分别为88%和77%,组间比较有显著性差异(P=0.018)。A组和B组中医证候总有效率分别为84%和74%,组间比较无显著性差异(P>0.05)。治疗前2组中风病病类量化评分比较无显著性差异(P>0.05),治疗中与治疗后组间比较有显著性差异(P=0.045,P=0.001)。2组均能改善全血黏度(低切)、纤维蛋白原、血小板聚集率等指标(P<0.01或0.05),同时A组对血浆黏度有明显改善作用(P=0.008)。2组都没有出现不良事件。结论葛酮通络胶囊治疗脑梗死恢复期瘀血痹阻脉络证安全有效。

国产安非他酮缓释片治疗抑郁症的Ⅱ期临床研究

目的:评价安非他酮治疗抑郁症的疗效和安全性。方法:采用随机、双盲、多中心、平行对照研究。共入组抑郁症患者237例,其中试验组119例,对照组118例,分别口服安非他酮150～450 mg·d-1,氟西汀10～30 mg·d-1。疗程均为6周。用汉密尔顿抑郁量表(HAMD)和临床总体印象量表(CGI)评定疗效,药物不良反应量表(TESS)评定安全性。结果:治疗6周后两组患者HAMD评分较基线均显著降低(P<0．05),总有效率安非他酮组70．69％,氟西汀组74．14％。组间差异无显著性(P>0．05)。不良反应发生率安非他酮组41．4％,氟西汀组44．8％,组间差异无显著性(P>0．05)。结论:安非他酮治疗抑郁症安全有效。

国产唑来膦酸(博来宁)与帕米膦酸二钠(博宁)治疗癌性骨痛随机双盲双模拟多中心Ⅱ期临床研究

目的:评价国产注射用唑来膦酸(博来宁)治疗癌性骨痛的临床疗效和安全性。方法:采用多中心、随机双盲对照试验将237例癌性骨痛患者随机分为试验组和对照组,试验组接受唑来膦酸4mg,静脉滴注15min,对照组接受帕米膦酸二钠(博宁)90mg,静脉滴注4h。用药4周内逐日评价骨痛的变化及不良反应。结果:可评价疗效219例,其中试验组112例,对照组107例;临床观察指标:疗后14天内最佳疗效:试验组完全缓解(CR)10.08%(12/112),部分缓解(PR)53.78%(64/112),临床获益率(CR+PR+MR)90.75%;对照组完全缓解5.08%(6/107),部分缓解54.24%(64/107),临床获益率83.90%,两组比较无显著性差异(P>0.05)。次要观察指标:1)疗后14天内每天的临床疗效:试验组给药后第5、7～12天共7天试验组每日临床疗效优于对照组(P<0.05)。2)疗后28天内最佳疗效:两组比较无显著性差异(P>0.05)。3)疗后14天内缓解的维持时间:试验组和对照组完全缓解的维持时间分别为5.51和3.01天(P=0.0302),有效维持时间分别为9.02和8.02天(P>0.05)。4)首次达临床有效(CR或PR)时间:试验组6天,对照组8天(P=0.0182)。不良反应主要有发热、低钙血症、疲劳等,试验组和对照组不良反应发生率分别为20.17%和24.58%(P>0.05),试验组和对照组均未见有严重肝肾功能、心电图异常等发生。结论:唑来膦酸能够有效缓解癌症骨转移患者的疼痛,其有效率及不良反应发生率与帕米膦酸二钠相当,使用安全、方便。