黑色素瘤及胰腺癌治疗进展.ppt_第1页
黑色素瘤及胰腺癌治疗进展.ppt_第2页
黑色素瘤及胰腺癌治疗进展.ppt_第3页
黑色素瘤及胰腺癌治疗进展.ppt_第4页
黑色素瘤及胰腺癌治疗进展.ppt_第5页
已阅读5页,还剩111页未读 继续免费阅读

下载本文档

版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领

文档简介

黑色素瘤治疗进展,保守估计,美国每年约新增7.5万人,中国每年新增2万人,2010年晚期黑色素瘤治疗情况,Vernon K Sondak. Discussion: Ipilimumab: The light at the end of the tunnel? 2010, ASCO plenary session,晚期黑色素瘤治疗,2008ASCO 900例黑色素瘤肝转移 手术 VS 未手术 OS 29m VS 7m 5年OS 33% VS 5%,Ribas A. N Engl J Med. 2012;366:2517-2519. Copyright 2012 Massachusetts Medical Society. Reprinted with permission from Massachusetts Medical Society.,CTLA-4 and PD-1/L1 Checkpoint Blockade for Cancer Treatment,阻断CTLA4/B7 与阻断 PD-1/PD-L1之区别,里程碑:Ipilimumab 2013年全球销售额高达5.77亿美元,1. Hodi FS, et al. N Engl J Med. 2010;363:711-723. 2. Robert C, et al. N Engl J Med. 2011;364:2517-2526.,Ipi + gp100 Ipi gp100,Median OS, Mos,10.0 10.1 6.4,HR,0.68 0.66,P Value, .001 .003,Ipi + D Placebo + D,Median OS, Mos,11.2 9.1,HR,0.72,P Value, .001,Est 1, 2, 3-Yr Survival, %,47.3, 28.5, 20.8 36.3, 17.9, 12.2,Ipilimumab + gp100 vs gp1001,Ipilimumab vs Placebo2,OS (%),Mos,0,0,100,48,80,60,40,20,40,32,24,16,8,56,52,44,36,28,20,12,4,Patients Survival (%),Mos,0,0,100,80,60,40,20,32,20,48,28,16,4,44,40,8,12,24,36,Ipilimumab + dacarbazine,Placebo + dacarbazine,Ipilimumab:30余年来首个药物证实改善晚期黑色素瘤总生存,Previously Treated Patients,Previously Untreated Patients,ODay S at al JCO 2010;28:18s (Abstract 4),免疫相关毒性irAE,Evolution of Response: Patient Example,Screening,Week 12 Initial increase in total tumour burden (mWHO PD),Week 16 Responding,Week 72 Durable & ongoing response without signs of IRAEs,Courtesy of K. Harmankaya,抗PD-1抗体 Keytruda (pembrolizumab,MK3475) 9月4日美国FDA批准 Opdivo(nivolumab)日本已经上市,Nivolumab Activity (ORR)1 Melanoma: 28% NSCLC: 18% RCC: 27%,MK-3475 Activity (ORR)2 Melanoma: 38% Highest dose: 52% (assessed by RECIST 1.1 with confirmation by ICR),1. Topalian SL, et al. N Engl J Med. 2012;366:2443-2454. Copyright 2012 Massachusetts Medical Society. Reprinted with permission from Massachusetts Medical Society. 2. Hamid O, et al. N Engl J Med. 2013;369:134-144.,Activity of Anti-PD-1 Agents in Solid Tumors,81% of pts with response still on treatment at time of analysis (median followup: 11 mos),Patient with metastatic melanoma,Pembrolizumab (MK-3475) in Advanced Melanoma: Phase I Trial,Melanoma expansion cohort of phase I KEYNOTE-001 study Advanced, unresectable disease with ECOG PS 0-1 Ipilimumab-treated patients must have PD with resolution of related AEs,Ribas A, et al. ASCO 2014. LBA9000.,IPI Naive 10 mg/kg q2w (n = 41),IPI Naive 10 mg/kg q3w (n = 24),IPI Naive 2 mg/kg q3w (n = 22),IPI Treated 10 mg/kg q2w (n = 16),IPI Treated 10 mg/kg q3w (n = 32),IPI Refractory 10 vs 2 mg/kg q3w (n = 173),IPI Nave 10 vs 2 mg/kg q3w (n = 103),Nonrandomized cohorts (n = 135),Randomized cohorts (n = 276),Baseline January 2012,April 2012,Hamid O, et al. N Engl J Med. 2013;369:134-144. Copyright 2013 Massachusetts Medical Society. Reprinted with permission from Massachusetts Medical Society.,54-yr-old male with desmoplastic melanoma after progressing on ipilimumab,Clinical Activity of MK-3475 in a Patient With Metastatic Desmoplastic Melanoma,CTL Infiltrates in Regressing Metastatic Melanoma Lesion After MK-3475 Treatment,Baseline: February 29, 2012,August 20, 2012,Ribas A, et al. ASCO 2013. Abstract 9009.,Pembrolizumab (MK-3475) in Advanced Melanoma: AEs 10% Incidence,Similar safety profiles in ipilimumab-naive and ipilimumab-treated patients Other grade 3/4 AE ( 1% incidence): ALT elevation, headache, hypothyroidism, decreased appetite, dyspnea,Ribas A, et al. ASCO 2014. Abstract LBA9000.,40,49,13,Pembrolizumab (MK-3475) in Advanced Melanoma: Response by PD-L1 Expression,PD-L1 positivity: staining in 1% of tumor cells 125 patients evaluable for PD-L1 expression,PD-L1,PD-L1+,P = .0007*,Kefford R, et al. ASCO 2014. Abstract 3005.,*1-sided P values calculated by logistic regression, adjusting for dose/schedule.,Unselected (n = 113),PD-L1+ (n = 83),PD-L1 (n = 30),0,10,20,30,40,50,60,70,ORR (%),Pembrolizumab (MK-3475) in Advanced Melanoma: Survival by PD-L1 Expression,PD-L1 positivity: staining in 1% of tumor cells,PD-L1,P = .0051,P = .3165,Overall Survival,Progression-Free Survival,Kefford R, et al. ASCO 2014. Abstract 3005.,80,60,40,20,0,0,20,40,60,80,100,PFS (%),Wks,PD-L1 positive PD-L1 negative,80,60,40,20,0,0,20,40,60,80,100,OS (%),Wks,PD-L1 positive PD-L1 negative,Phase I Nivolumab Study: Long-term Follow-up in IPI-Naive Pts With Melanoma,Primary endpoints: safety, tolerability Secondary endpoints: preliminary efficacy, dose-response relationships Study amended to collect OS data Subgroup analysis of response by key patient features Exploratory PD-L1 analysis: positive if tumor membrane stained at any intensity (cut-off: 1% or 5% expression),Hodi FS, et al. ASCO 2014. Abstract 9002.,Patients with advanced melanoma, ECOG PS 0-2, 1-5 lines of previous systemic therapy (N = 107) Treatment max:96 weeks,Nivolumab 0.1 mg/kg IV q2w (n = 17),Nivolumab 0.3 mg/kg IV q2w (n = 18),Nivolumab 1 mg/kg IV q2w (n = 35),Nivolumab 3 mg/kg IV q2w (n = 17),Nivolumab 10 mg/kg IV q2w (n = 20),Phase I Nivolumab Study in Advanced Melanoma: Select AEs,Select AE: associated with potential immunologic etiologies that require more frequent monitoring and/or unique intervention All patients have 1 yr of follow-up,1Topalian S, et al. J Clin Oncol. 2014 ;32:1020-30,Topalian S, et al. J Clin Oncol. 2014;32:1020-1030. Hodi FS, et al. ASCO 2014. Abstract 9002.,-100,-50,0,50,100,150,200,Maximum % Response in Baseline Target Lesions,1% cutoff,Positive,PD-L1 status,Patient,Phase I Nivolumab Study in Advanced Melanoma: ORR by PD-L1 Expression,Tumor tissue collection retrospective; 41 samples,Hodi FS, et al. ASCO 2014. Abstract 9002.,Negative,-100,-50,0,50,100,150,200,5% cutoff,Positive,PD-L1 status,Patient,Negative,Phase I Nivolumab Study in Advanced Melanoma: Expert Perspective,Longest follow-up of any PD-1 antibody study Response duration 64% beyond 24 wks Median DoR of 22.9 mos Survival outcomes 2-yr OS: 48%; 3-yr OS: 41% Median OS: 20.3 mos at 3 mg/kg dose for phase II/III studies Median PFS: 9.7 mos at 3 mg/kg dose for phase II/III studies Grade 3/4 irAEs: 5%,Hodi FS, et al. ASCO 2014. Abstract 9002.,Phase I Study: Nivolumab + Ipilimumab in Stage III/IV Melanoma,Concurrent therapy study design Sequenced therapy study design,Patients with stage III/IV melanoma with 3 previous therapies,Induction Ipilimumab q3w x 4 cycles + Nivolumab q3w x 8 cycles,Maintenance Ipilimumab + Nivolumab q12w x 8 cycles,Patients with stage III/IV melanoma with 3 previous doses of ipilimumab (n = 33),Nivolumab (1 or 3 mg/kg) q2w until progression,Wolchok JD, et al. N Engl J Med. 2013;369:122-133. Sznol M, et al. ASCO 2014. LBA9003,Maintenance Nivolumab 3 mg/kg q2w (max 48 doses),Cohort 8,Cohorts 6, 7,Cohort 1, 2, 2a, 3,(n = 53),(n = 41),Induction Ipilimumab 1 mg/kg q3w x 4 cycles + Nivolumab 3 mg/kg q3w x 4 cycles,Phase I Study of Nivolumab + Ipilimumab in Advanced Melanoma: Safety,No new safety signals with 22 mos of follow-up for the initial concurrent cohorts 22/94 (23%) patients discontinued treatment due to treatment-related adverse events 1/94 drug-related death in trial; fatal multiorgan failure (as a result of colitis) in cohort 8,Sznol M, et al. ASCO 2014. Abstract LBA9003.,Phase I Study of Nivolumab + Ipilimumab in Melanoma: Response Characteristics,34 pts maintain an ongoing response Patients can continue to respond following treatment discontinuation Median follow-up of 22 mos and 7 mos for cohorts 2 and 8, respectively For 7 responding pts in cohort 2 who discontinued therapy for reasons other than disease progression, 86% (6/7) responded for 16 wks since end of therapy 89% (8/9) of pts in cohort 2 remained in response and 94% (16/17) of cohort 8 remained in response at the time of analysis,Sznol M, et al. ASCO 2014. Abstract LBA9003.,0,4,8,12,16,20,24,28,130,0,10,20,30,40,50,60,70,80,90,100,110,120,Wks,Mos,Cohort,Nivo 0.3/IPI 3 Cohort 1,Nivo 1/IPI 3 Cohort 2,Nivo 3/IPI 1 Cohort 2a,Nivo 3/IPI 3 Cohort 3,Nivo 1/IPI 3 Cohort 8,Time to and duration of response while on treatment,Response duration following treatment discontinuation,Time to response,Ongoing response,Sznol M, et al. ASCO 2014. Abstract LBA9003.,Phase I Study of Nivolumab + Ipilimumab in Melanoma: OS for Concurrent Tx,100,90,80,70,60,50,40,30,20,10,0,Survival (%),48,0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,Mos,Pts at Risk, n Nivo 0.3/IPI 3 Nivo 1/IPI 3 Nivo 3/IPI 1 Nivo 3/IPI 3 Concurrent,14 17 16 6 53,13 17 16 6 52,11 16 15 6 48,10 15 15 6 46,8 15 15 6 44,7 14 13 6 40,7 14 4 6 31,7 13 2 6 28,7 9 0 3 19,7 4 0 0 11,5 3 0 0 8,2 3 0 0 5,2 3 0 0 5,2 2 0 0 4,1 0 0 0 1,1 0 0 0 1,0 0 0 0 0,Nivo 0.3 mg/kg + IPI 3 mg/kg Nivo 1 mg/kg + IPI 3 mg/kg Nivo 3 mg/kg + IPI 1 mg/kg Nivo 3 mg/kg + IPI 3 mg/kg Concurrent cohort,Censored,2-yr OS: 50%,2-yr OS: 79%,2-yr OS: 88%,Concurrent Therapy With Ipilimumab and Nivolumab: Expert Perspective,42% ORR with 17% CRs and 82% in remission for all patients receiving concurrent treatment 62% rate of grade 3/4 irAEs at optimal doses: LFTs, lipase, amylase, rash, colitis BRAF status, PD-L1 tumor staining not clearly associated with response Response in sequential patients associated with plasma ipilimumab levels prior to starting nivolumab Concurrent 2-yr OS of 79% = impressive Benefit worth the toxicity?,辅助治疗:高剂量干扰素1年方案,FDA 和EMA HDI - IIB,C和III期 (高危患者): 20 MIU/m2 IV 5x /周,4周(诱导) 10 MIU/m2 SC 3x /周,48周 (维持),辅助治疗:EORTC 18071: Adjuvant Ipilimumab vs Placebo for Resected Stage III Disease,Eggermont A, et al. ASCO 2014. Abstract LBA9008.,Primary endpoint: RFS per IRC (time to local, regional, distant metastasis, or death) Secondary endpoints: OS, DMFS, AE profile, health-related QoL,Patients with high-risk, completely resected stage III melanoma and ECOG PS 0/1 (N = 951),Ipilimumab 10 mg/kg q3w x 4 then q12w for up to 3 yrs (n = 475),Placebo q3w x 4 then q12w for up to 3 yrs (n = 476),Stratified by stage (IIIa vs IIIb vs IIIc with 1-3 positive LN vs IIIc with 4 positive LN), region (North America, Europe, Australia),Adjuvant Ipilimumab vs Placebo for Resected Stage III Disease: RFS,Eggermont A, et al. ASCO 2014. Abstract LBA9008.,*Stratified by stage. Data are not yet mature.,100,80,60,40,20,0,Patients Alive Without Relapse (%),Median: 26.1 mos,Median: 17.1 mos,Ipilimumab 10 mg/kg Placebo,60,0,12,24,36,48,Mos,Patients at Risk, n Ipilimumab Placebo,O 234 294,N 475 476,276 260,205 193,67 62,5 4,0 0,Eggermont A, et al. ASCO 2014. Abstract LBA9008.,Events/Patients,Ipilimumab,Placebo,HR (CI*) (Ipilimumab : Placebo),AJCC 2002 (CRF) Stage IIIA Stage IIIB Stage IIIC,Type of LN+ Microscopic Macroscopic,Ulceration No Yes Unknown,Total,*95% CI for total, 99% CI elsewhere. Unstratified analysis.,34/98 99/213 101/164,36/88 121/207 137/181,83/210 151/265,108/193 186/283,116/257 106/197 12/21,131/244 146/203 17/29,234/475 (49.3%),294/476 (61.8%),0.76 (0.64-0.91),0.84 (0.61-1.17) 0.67 (0.48-0.93) 1.08 (0.40-2.87),0.68 (0.47-0.99) 0.83 (0.63-1.10),0.91 (0.49-1.68) 0.77 (0.54-1.08) 0.73 (0.52-1.02),0.25,0.5,1.0,2.0,4.0,Ipilimumab better,Placebo better,Treatment effect P .01,Adj. Ipilimumab vs Placebo for Resected Stage III Disease: RFS by Subgroup,Adjuvant Ipilimumab vs Placebo for Resected Stage III Disease: irAEs,Eggermont A, et al. ASCO 2014. LBA9008.,Adjuvant Ipilimumab in Stage III Melanoma: Expert Perspective,Median RFS in resected stage IIIa-c melanoma: 17 mos with placebo to 26 mos with ipilimumab (HR: 0.75; P = .0013) Improvement seen for all stages, ulcerated primary or not, microscopic or macroscopic LN burden Grade 3/4 irAE rate: 42% Is the benefit worth the toxicity?,局部免疫治疗:Oncolytic Virus T-vec,OPTiM: Talimogene Laherparepvec in Stage IIIB/IV Melanoma (Phase III Study),Talimogene laherparepvec: an oncolytic immunotherapy comprising a HSV-1 virus backbone containing the gene for GM-CSF, a potent immune stimulator Primary endpoint: durable response rate (CR or PR for 6 mos) Secondary endpoints: OS, ORR, TTF, safety,Patients with stage IIIb, IIIc, or IV unresectable melanoma, ECOG PS 0-1 (N = 436),Every 2 wks for up to 2 yrs,Up to 3 yrs of follow-up after treatment,T-Vec up to 4 mL (108 pfu/mL per injection) intralesionally q2w* (n = 295),GM-CSF 125 g/m2 SC daily for 2 wks, then 2 wks off (n = 141),ClinicalT. NCT00769704. Kaufman HL, et al. ASCO 2014. Abstract 9008a.,Randomized 2:1,*Initial dose 106 pfu/mL with 3 wks before subsequent dosing.,OPTiM Study of T-Vec in Stage IIIB/IV Melanoma: Response (ITT Population),DRR: 16.3% with T-Vec vs 2.1% with GM-CSF (P .0001) Responses in both local and distant lesions,Kaufman HL, et al. ASCO 2014. Abstract 9008a. Andtbacka RH, et al. ASCO 2013. Abstract LBA9008.,OPTiM Study of T-Vec in Stage IIIB/IV Melanoma: OS,Events/N (%),Median (95% CI),in Mos,T-Vec,189/295 (64),23.3 (19.5-29.6),GM-CSF,101/141 (72),18.9 (16.0-23.7),HR: 0.79 (95% CI: 0.62-1.00; unadjusted log-rank P = .051),Kaufman HL, et al. ASCO 2014. Abstract 9008a.,100,80,60,40,20,0,OS (%),60,0,10,15,20,5,25,30,35,40,45,50,55,Pts at Risk, n T-Vec GM-CSF,295 141,269 124,230 100,187 83,159 63,145 52,125 46,95 36,66 27,36 15,16 5,2 0,0 0,T-Vec in Stage IIIB/IV Melanoma (OPTiM Study): Expert Perspective,T-Vec is an effective local intralesional therapy with response rates at injected lesions of 64% 24-wk DRR endpoint met: 16% with T-Vec vs 2% with GM-CSF (P .0001) Toxicities were minimal OS: borderline significant improvement with T-Vec (HR: 0.79; P = .051) T-Vec has locoregional activity and modest systemic effects, well suited for combination with checkpoint protein inhibitors as an immune-priming agent,*Only patients who received both T-Vec and IPI. CR, CRu, and PD included. 1 patient with PD not shown in the plot because tumor burden could not be accurately calculated (missing postbaseline data). Percentage change from baseline: 538 Percentage change from baseline: 265,100,50,0,25,50,100,200,Percentage Change From Baseline,Patients (N=17),Stage IV M1c (n=4),Stage IV M1b (n=5),Stage IV M1a (n=4),Stage IIIc (n=3),Stage IIIb (n=1),Puzanov I, et al. ASCO 2014. Abstract 9029.,T-Vec + IPI in Unresected Stage IIIB-IV Melanoma: Max Change in Tumor Burden,T-Vec + IPI in Unresected Stage IIIB-IV Melanoma: Expert Perspective,18 patients treated with T-Vec plus IPI ORR: 56% (4 CR, 6 PR) plus 3 SD Only 3 grade 3/4 irAEs from IPI Melan-Atargeting T cells increased in the peripheral blood after combination therapy Impressive early results addressing the hypothesis that T-Vec may prime an immune response amplified by IPI,靶向治疗: 伊马替尼、恩度、威罗菲尼、达拉菲尼、 达拉菲尼联合曲美替尼,C-KIT突变患者格列卫治疗有效 中国人约10.8%C-kit突变,501 patients screened. 43 pts treated and evaluated Response: (23.3%) 10 PR and 13 SD. No response in 15 dose escalation (600-800 mg/day) pts The median PFS: 3.5m (15 weeks) The OS: 14m (60 weeks), 1-year OS 51%,Guo, et al. J Clin Oncol. 2011,恩度+DTIC vs DTIC,恩度+DTIC vs DTIC,Endostar plus Dacarbazine improve mPFS vs. Dacarbazine alone as the 1st line therapy Estimated 1- and 2-yr survival rates 1 yr: 26.7% vs. 56.3%, 2 yr: 12.7% vs.22.6% Might be a new regimen for the untreated pts with advanced melanoma.,靶向BRAF 突变、MEK BRAF突变率:中国人:20.6%,西方:50%,威罗菲尼:BRIM3试验 肿瘤迅速缩小大于80% 迅速缓解症状 中位PFS7个月 与DTIC比较早期即有生存获益,BREAK3:达拉非尼 Vs DTIC 达拉非尼 187 入组 150mgbid DTIC 63入组 1g/m2 PFS 达拉非尼 Vs DTIC 6.9m vs 2.7m 达拉非尼 OS大于18m MEK抑制剂:曲美替尼 177BRAF突变患者接受达拉非尼联合 78既往未使用BRAF抑制剂 PFS 11m ORR63-76% 69既往使用BRAF抑制剂PFS3.6m ORR9-15%,Phase II Study: Combined BRAF and MEK Inhibition in BRAFV600-Positive Melanoma,Primary endpoints: cuSCC, PFS, ORR, DoR, safety Secondary endpoints: population PK parameters, OS,*Crossover to combination dabrafenib + trametinib 150/2 after progression allowed.,Patients with metastatic melanoma, BRAFV600E/K mutations, ECOG PS 0-1, no previous BRAFi/MEKi (N = 162),Dabrafenib 150 mg BID* (n = 54),Dabrafenib 150 mg BID Trametinib 2 mg QD (n = 54),Dabrafenib 150 mg BID Trametinib 1 mg QD (n = 54),Flaherty KT, et al. N Engl J Med 2012;367:1694-1703.,BRAF and MEK Inhibition in BRAFV600-Positive Melanoma: OS by Treatment Arm,Covariates significantly associated with OS Male vs female (HR: 0.45; P = .0472) LDH ULN vs ULN (HR: 0.19; P .0001) 3 vs 3 disease sites (HR: 0.23; P = .0007),Flaherty KT, et al. ASCO 2014. Abstract 9010.,III期临床试验:COMBI-d: Dabrafenib + Trametinib as First-line Tx in BRAFV600E/K Melanoma,Primary endpoint: PFS Secondary endpoints include: OS, ORR, DoR, safety,Long GV, et al. ASCO 2014. Abstract 9011.,Patients with unresectable stage IIIC or IV cutaneous melanoma and BRAFV600E/K mutation (947 screened; N = 423),Dabrafenib 150 mg BID + Trametinib 2 mg QD (n = 211),Dabrafenib 150 mg BID + Placebo (n = 212),Stratified by LDH ( ULN vs ULN), and BRAF mutation (V600E vs V600K),Crossover not permitted,Dabrafenib + Trametinib as First-line Tx in BRAFV600E/K Melanoma (COMBI-d): PFS,Improved ORR with combination therapy (67% vs 51%),Long GV, et al. ASCO 2014. Abstract 9011.,1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0,Proportion Alive and Progression Free,Mos From Randomization,14,0,2,4,6,8,10,12,Dabrafenib Med PFS: 8.8 mos 6-mo PFS: 57%,Dabrafenib + Trametinib Med PFS: 9.3 mos 6-mo PFS: 70%,HR 0.75 (95% CI: 0.57-0.99; P = .035) Median follow-up: 9 mos,Dabrafenib + Trametinib as First-line Tx in BRAFV600E/K Melanoma (COMBI-d): OS,Long GV, et al. ASCO 2014. Abstract 9011.,*Not significant, did not cross stopping boundary for interim analysis (2-sided .00028).,Dabrafenib + Trametinib 6 month OS: 93% Died (events): 40 (19%),1.0,0.9,0.8,0.7,0.6,0.5,0.4,0.3,0.2,0.1,0,0,2,4,6,8,10,12,14,Mos From Randomization,211 212,208 205,185 174,160 142,102 90,11 11,0 0,0 0,Pts at Risk, n Dabrafenib + trametinib Dabrafenib,Proportion Alive,16,18,20,199 190,44 41,2 0,Dabrafenib 6 month OS: 85% Died (events): 55 (26%),HR: 0.63 (95% CI: 0.42-0.94; P = .023*),Median follow-up: 9 mos,Dabrafenib + Trametinib in BRAFV600E/K Melanoma: Exper

温馨提示

  • 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
  • 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
  • 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
  • 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
  • 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
  • 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
  • 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

评论

0/150

提交评论