Long-term real-world outcomes of first-line (1L) pembrolizumab (pembro) monotherapy in PD-L1 ≥50% metastatic NSCLC.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. e21184-e21184
Author(s):  
Vamsidhar Velcheti ◽  
Xiaohan Hu ◽  
Bilal Piperdi ◽  
Lingfeng Yang ◽  
Thomas A. Burke

e21184 Background: Pembro monotherapy was approved in the US in October 2016 as 1L therapy for patients with metastatic NSCLC and PD-L1 tumor proportion score (TPS) ≥50% based on findings from KEYNOTE-024. With 5-year follow-up in KEYNOTE-024, median overall survival (OS) was 26.3 months (95% CI, 18.3–40.4) in the pembro arm. With 4-year follow-up in KEYNOTE-042, median OS was 20.0 months (15.9–24.2) in the pembro PD-L1 ≥50% subgroup. Our aim was to describe long-term, real-world outcomes with 1L pembro monotherapy for patients treated at US oncology practices with disease characteristics similar to those in the KEYNOTE trials. Methods: Patients initiating 1L pembro monotherapy from December 1, 2016, through November 30, 2017, were selected from the US nationwide Flatiron Health de-identified, electronic health record-derived database if they had stage IV or recurrent metastatic NSCLC with PD-L1 TPS ≥50%, ECOG performance status 0–1, and no known EGFR/ALK/ROS1 aberration (confirmed negative EGFR/ALK for nonsquamous tumors). Enhanced manual chart review was used to determine real-world progression (rwP), tumor response (rwTR), and reasons for pembro discontinuation. OS and real-world progression-free survival (rwPFS) were estimated using the Kaplan-Meier method. Data cutoff was August 31, 2020. Results: Median study follow-up was 38.4 months (range, 33.1–44.9). Of 228 eligible patients, median age was 71 years (range, 46–82); 123 (54%) were women; 156 (68%), 12 (5%), and 60 (26%) had nonsquamous, not otherwise specified, and squamous NSCLC, respectively; and 209 (92%) were current/former smokers. History of brain metastasis was recorded for 17 (7%). Pembro was discontinued by 151 patients (66%), most commonly because of disease progression (70; 46%) and secondarily for toxic effect of therapy (35; 23%); 87 patients (38%) received ≥1 additional lines of therapy. OS, rwPFS, and rwTR results are shown below. Conclusions: In this real-world study with 3-year follow-up, patients with PD-L1 TPS ≥50% metastatic NSCLC without known EGFR/ALK aberrations and good performance status treated with 1L pembro monotherapy experienced median OS of 23 months, similar to the OS observed in phase III pivotal clinical trials, supporting the long-term OS benefits of 1L pembro monotherapy in this patient population.[Table: see text]

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 7565-7565
Author(s):  
Shunichi Sugawara ◽  
Makoto Maemondo ◽  
Toshiyuki Harada ◽  
Akira Inoue ◽  
Nobumichi Matsubara ◽  
...  

7565 Background: Standard first-line chemotherapy for elderly NSCLC pts has been considered as a monotherapy with vinorelbine or gemcitabine globally. However, we have demonstrated the high efficacy of CP for elderly pts in our previous trial (Ann Oncol 2010). Meanwhile, D has been considered as an alternative option for this population in Japan according to the result of WJTOG9904 (JCO 2006). Thus we compared the two regimens to select the proper candidate for future phase III trial. Methods: Eligible pts were aged 70 years or older with newly diagnosed stage IIIB/IV NSCLC; ECOG performance status 0-1; adequate organ function; written informed consent. Pts were randomized to receive carboplatin (AUC 6) on day 1 and paclitaxel (70mg/m2 on day 1, 8, and 15) every 4 weeks or D (60mg/m2 on day 1) every 3 weeks. The primary endpoint was overall response rate (ORR), and secondary endpoints were progression-free survival (PFS), overall survival, and toxicity profile. Assuming that ORR of 40% would be potential usefulness while ORR of 20% would be the lower limit of interest, 40 pts in each arm were required if expect 10% loss to follow up. Results: Between July 2006 and September 2010, 84 pts were enrolled and 41 pts in CP arm and 42 pts in D arm were eligible (median age, 76 years; 75% male; 72% stage IV). Median treatment cycle was 4 in each arm (CP, range 1-6; D, range 1-8). ORRs were 51% (95%CI: 36-66%) and 26% (95%CI: 12-39%) in the CP and D arm, respectively. With a median follow-up of 18.4 months, median PFS were 6.5 and 3.9 months in the CP and D arm, respectively (Logrank, P=0.0027). Grade 3 or severer toxicities were as follows: neutropenia (CP, 56% and D, 79%), anemia (CP, 15% and D, 7%), thrombocytopenia (CP, 10% and D, 0%), infection (CP, 20% and D, 25%). One treatment-related death due to neutropenia, pneumonia, and lethal arrhythmia occurred in D arm but none in CP arm. Conclusions: The platinum doublet CP achieved higher activity with an acceptable toxicity profile for elderly pts with advanced NSCLC compared to monotherapy with D. The superiority of CP to the monotherapy in this trial is consistent with results of recent IFCT-0501 trial (Lancet 2011).


2019 ◽  
Vol 37 (15_suppl) ◽  
pp. e20721-e20721
Author(s):  
Parva Kiran Bhatt ◽  
Ibtihaj Fughhi ◽  
Sanjib Basu ◽  
Mary J. Fidler ◽  
Jeffrey Allen Borgia ◽  
...  

e20721 Background: Pemetrexed maintenance therapy is associated with superior survival in stage IV nsqNSCLC patients. We have observed long term disease control in some patients treated with at least one cycle of Pem/Plat with potential for maintenance pem. There are no reports of data regarding long term PFS and OS in patients treated with Pem regimens. The objectives of our retrospective analysis are to determine the frequency of long term disease control on Pem maintenance and to identify parameters associated with longer PFS/OS. Methods: We included all patients with Stage IV nsqNSCLC who received at least one cycle of pem/plat between May 2010 and Nov 2013. We identified 240 patients from our database and analyzed their demographics, lab values, dates of therapy, and dates of progression. PFS/OS was estimated by the Kaplan-Meier method and associations with patient characteristics were assessed by log-rank tests and Cox proportional hazards analysis. The shortest potential follow up was 5 years. Results: Median age was 66 years, 60% were female, and 72% were Caucasian. Baseline ECOG performance status was 0(22%), 1(50%) and ≥ 2(22%). Median PFS was 6.2 months. At 1, 2, 3, 4, and 5 years of follow up absence of disease progression was seen in 33%, 14%, 7.5%, 4%, and 3%, respectively. Additionally, in terms of OS at 1-5 years, we observed 54.5%, 35%, 21%, 14%, and 11%. Lower baseline neutrophil: lymphocyte ratio (NLR) was strongly associated with improved PFS when using NLR≤5 vs > 5 (median PFS 13.2 mo vs 5.6 mo) Additionally, baseline Hemoglobin (mean = 12.03 g/dL, HR = .904, p = .0046) and Albumin (mean 3.3 g/dL, HR = .7722, p = .024) were associated with better PFS. Conclusions: The similarity in median PFS in our patients (6.2 mo) and clinical trial data suggests that our group of real world patients did not have uniquely favorable baseline characteristics. However, the patients most likely to reach long PFS/OS milestones had favorable baseline prognostic indicators suggesting that this patient subset might also be most likely to benefit from the recently approved regimen which combined Pembrolizumab with Pemetrexed/Carboplatin.


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 9000-9000
Author(s):  
Martin Reck ◽  
Tudor-Eliade Ciuleanu ◽  
Manuel Cobo ◽  
Michael Schenker ◽  
Bogdan Zurawski ◽  
...  

9000 Background: In the randomized phase 3 CheckMate 9LA trial (NCT03215706), first-line NIVO + IPI combined with 2 cycles of chemo significantly improved overall survival (OS), progression-free survival (PFS), and objective response rate (ORR) vs chemo alone (4 cycles). Clinical benefit was observed regardless of programmed death ligand 1 (PD-L1) expression level and histology. Here we report data with 2 years’ minimum follow-up from this study. Methods: Adult patients (pts) with stage IV / recurrent NSCLC, ECOG performance status ≤ 1, and no known sensitizing EGFR/ALK alterations were stratified by PD-L1 (< 1% vs ≥ 1%), sex, and histology (squamous vs non-squamous) and were randomized 1:1 to NIVO 360 mg Q3W + IPI 1 mg/kg Q6W + chemo (2 cycles; n = 361) or chemo alone (4 cycles; n = 358). Pts with non-squamous NSCLC in the chemo-alone arm could receive pemetrexed maintenance. The primary endpoint was OS. Secondary endpoints included PFS and ORR by blinded independent central review, and efficacy by different PD-L1 levels. Safety was exploratory. Results: At a minimum follow-up of 24.4 months for OS (database lock: Feb 18, 2021), pts treated with NIVO + IPI + chemo continued to derive OS benefit vs chemo, with a median OS of 15.8 months vs 11.0 months, respectively (HR, 0.72 [95% CI, 0.61–0.86]); 2-year OS rates were 38% vs 26%. Median PFS with NIVO + IPI + chemo vs chemo was 6.7 months vs 5.3 months (HR, 0.67 [95% CI, 0.56–0.79]); 8% and 37% of pts who had disease progression received subsequent immunotherapy, respectively. ORR was 38% with NIVO + IPI + chemo vs 25% with chemo. Similar clinical benefit with NIVO + IPI + chemo vs chemo was observed in all randomized pts and across the majority of subgroups, including by PD-L1 expression level (Table) or histology. Any grade and grade 3–4 treatment-related adverse events were reported in 92% and 48% of pts in the NIVO + IPI + chemo arm vs 88% and 38% in the chemo arm, respectively. Conclusion: With 2 years’ minimum follow-up, first-line NIVO + IPI + chemo demonstrated durable survival and benefit versus chemo in pts with advanced NSCLC; no new safety signals were identified. Clinical trial information: NCT03215706. [Table: see text]


2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 9016-9016
Author(s):  
Luis G. Paz-Ares ◽  
Tudor-Eliade Ciuleanu ◽  
Jong-Seok Lee ◽  
Laszlo Urban ◽  
Reyes Bernabe Caro ◽  
...  

9016 Background: 1L NIVO + IPI was shown to provide durable long-term overall survival (OS) benefit vs chemo regardless of tumor programmed death ligand 1 (PD-L1) expression in patients (pts) with advanced NSCLC in CheckMate 227 Part 1 (NCT02477826); 3-year OS rates were 33% vs 22% in pts with PD-L1 ≥ 1% (HR, 0.79 [95% CI, 0.67–0.93]) and 34% vs 15% in pts with PD-L1 < 1% (HR, 0.64 [95% CI, 0.51–0.81]). Here we report updated results from the study with 4 years’ minimum follow-up. Methods: Adults with previously untreated stage IV / recurrent NSCLC, no known EGFR/ ALK alterations , and ECOG performance status ≤ 1 were enrolled; pts were stratified by squamous (SQ) and non-squamous (NSQ) histology. Pts with PD-L1 ≥ 1% (n = 1189) were randomized 1:1:1 to receive NIVO (3 mg/kg Q2W) + IPI (1 mg/kg Q6W), NIVO alone (240 mg Q2W), or chemo. Pts with PD-L1 < 1% (n = 550) were randomized 1:1:1 to receive NIVO + IPI, NIVO (360 mg Q3W) + chemo, or chemo. OS with NIVO + IPI vs chemo in pts with PD-L1 ≥ 1% was the primary endpoint. Results: With minimum follow-up of 49.4 months (database lock, Feb 18, 2021), pts were at least 2 years beyond the protocol-specified end of immunotherapy treatment. Pts with PD-L1 ≥ 1% continued to show durable benefit with NIVO + IPI vs chemo (HR, 0.76 [95% CI, 0.65–0.90]); 4-year OS rates were 29% (NIVO + IPI), 21% (NIVO), and 18% (chemo). At 4 years, 14% (NIVO + IPI), 10% (NIVO), and 4% (chemo) remained progression free. Among responders, 34%, 30%, and 7% remained in response, respectively. In an exploratory analysis in pts with PD-L1 ≥ 50%, 4-year OS rates were 37% (NIVO + IPI), 26% (NIVO), and 20% (chemo). In pts with PD-L1 < 1%, OS HR for NIVO + IPI vs chemo was 0.64 (95% CI, 0.51–0.81); 4-year OS rates were 24% (NIVO + IPI), 13% (NIVO + chemo) and 10% (chemo). At 4 years, 12% (NIVO + IPI), 7% (NIVO + chemo), and 0% (chemo) remained progression free. Among responders, 31%, 13%, and 0% remained in response, respectively. Among pts who progressed on NIVO + IPI vs chemo, 7% vs 40% (PD-L1 ≥ 1%), and 9% vs 33% (PD-L1 < 1%), received subsequent immunotherapy. Benefit with NIVO + IPI vs chemo was observed for both SQ and NSQ histology (Table). With long-term follow-up, no new safety signals were identified. Conclusions: With 4 years’ minimum follow-up, 1L NIVO + IPI continued to provide durable, long-term OS benefit vs chemo in pts with advanced NSCLC regardless of PD-L1 expression or histology. Clinical trial information: NCT02477826. [Table: see text]


2013 ◽  
Vol 31 (15_suppl) ◽  
pp. 9030-9030 ◽  
Author(s):  
Evan Hersh ◽  
Michele Del Vecchio ◽  
Michael Paul Brown ◽  
Richard Kefford ◽  
Carmen Loquai ◽  
...  

9030 Background: Activating mutations of BRAF V600 can be found in 40%-50% of melanomas and are related to poor prognosis. In a phase 3 trial for the treatment of metastatic melanoma (MM) in chemotherapy-naive patients, nab-paclitaxel (nab-P) vs dacarbazine (DTIC) demonstrated a significant improvement in the primary endpoint of progression-free survival (PFS), assessed by independent radiological review (IRR), and a trend toward prolonged overall survival (OS) at the interim survival analysis. The study also explored the effect of BRAF status on the efficacy parameters. Methods: Chemotherapy-naive patients with stage IV melanoma (M1c stage 65%; elevated LDH 28%) and ECOG performance status 0-1 were randomized to nab-P 150 mg/m2 on days 1, 8, and 15 of a 28-day cycle (n = 264) or DTIC 1000 mg/m2 on day 1 of each 21-day cycle (n = 265) independent of BRAF status. Prespecified subgroup analyses of final PFS and interim OS in subgroups by BRAF status (V600E mutant, wild-type, or unknown) were performed. Results: BRAF mutation status was balanced between the treatment arms, with 36% and 38% of patients with known BRAF mutation status in the nab-P and DTIC arms, respectively. Patient characteristics were also balanced within BRAF subgroups. As shown in the Table, advantage in the nab-P arm vs DTIC arm was observed for both PFS and interim OS regardless of BRAFmutation status. Poststudy BRAF inhibitor treatment was also balanced. Conclusions: In this phase III trial, treatment effect was independent of BRAF mutation status, benefiting all patients who received nab-P vs DTIC. Therefore nab-P should be considered in the armamentarium for all chemotherapy-naive patients with MM. Clinical trial information: NCT00864253. [Table: see text]


Author(s):  
Jedd D. Wolchok ◽  
Vanna Chiarion-Sileni ◽  
Rene Gonzalez ◽  
Jean-Jacques Grob ◽  
Piotr Rutkowski ◽  
...  

PURPOSE In the phase III CheckMate 067 trial, durable clinical benefit was demonstrated previously with nivolumab plus ipilimumab and nivolumab alone versus ipilimumab. Here, we report 6.5-year efficacy and safety outcomes. PATIENTS AND METHODS Patients with previously untreated unresectable stage III or stage IV melanoma were randomly assigned 1:1:1 to receive nivolumab 1 mg/kg plus ipilimumab 3 mg/kg once every 3 weeks (four doses) followed by nivolumab 3 mg/kg once every 2 weeks (n = 314), nivolumab 3 mg/kg once every 2 weeks (n = 316), or ipilimumab 3 mg/kg once every 3 weeks (four doses; n = 315). Coprimary end points were progression-free survival and overall survival (OS) with nivolumab plus ipilimumab or nivolumab versus ipilimumab. Secondary end points included objective response rate, descriptive efficacy assessments of nivolumab plus ipilimumab versus nivolumab alone, and safety. Melanoma-specific survival (MSS; descriptive analysis), which excludes deaths unrelated to melanoma, was also evaluated. RESULTS Median OS (minimum follow-up, 6.5 years) was 72.1, 36.9, and 19.9 months in the combination, nivolumab, and ipilimumab groups, respectively. Median MSS was not reached, 58.7, and 21.9 months, respectively; 6.5-year OS rates were 57%, 43%, and 25% in patients with BRAF-mutant tumors and 46%, 42%, and 22% in those with BRAF–wild-type tumors, respectively. In patients who discontinued treatment, the median treatment-free interval was 27.6, 2.3, and 1.9 months, respectively. Since the 5-year analysis, no new safety signals were observed. CONCLUSION These 6.5-year CheckMate 067 results, which include the longest median OS in a phase III melanoma trial reported to date and the first report of MSS, showed durable, improved clinical outcomes with nivolumab plus ipilimumab or nivolumab versus ipilimumab in patients with advanced melanoma and, in descriptive analyses, with the combination over nivolumab monotherapy.


2020 ◽  
Vol 38 (15_suppl) ◽  
pp. 9501-9501 ◽  
Author(s):  
Martin Reck ◽  
Tudor-Eliade Ciuleanu ◽  
Manuel Cobo Dols ◽  
Michael Schenker ◽  
Bogdan Zurawski ◽  
...  

9501 Background: NIVO + IPI was shown to improve overall survival (OS) and durability of response vs chemo in 1L advanced NSCLC in CheckMate 227 Part 1, regardless of PD-L1 expression. We hypothesized that a limited course of chemo combined with NIVO + IPI could provide rapid disease control while building on the durable OS benefit seen with dual PD-1 and CTLA-4 inhibition. CheckMate 9LA (NCT03215706) is a phase 3 randomized study evaluating NIVO + IPI + 2 cycles chemo vs chemo in 1L stage IV/recurrent NSCLC. Methods: Adults with tx-naive, histologically confirmed stage IV/recurrent NSCLC, ECOG performance status 0–1, and no known sensitizing EGFR/ALK alterations were randomized 1:1 to NIVO 360 mg Q3W + IPI 1 mg/kg Q6W + chemo (2 cycles) (n = 361) or chemo (4 cycles) alone (n = 358), stratified by PD-L1 (< 1% vs ≥ 1%), sex, and histology (squamous vs non-squamous). Chemo was based on histology. Pts with non-squamous NSCLC in the chemo-only arm could receive optional pemetrexed maintenance. Pts were treated with immunotherapy until disease progression, unacceptable toxicity, or for 2 y. The primary endpoint was OS; the interim analysis using Lan–DeMets alpha spending function with O’Brien–Fleming boundary was planned at ~80% information fraction (ie, after observing ~322 total events). Secondary endpoints included progression-free survival (PFS) and objective response rate (ORR) by blinded independent central review, and efficacy by PD-L1 subgroups. Exploratory endpoints included safety/tolerability. Results: Baseline characteristics were balanced across arms. At a preplanned interim analysis (minimum follow-up 8.1 mo), OS was significantly prolonged with NIVO + IPI + chemo vs chemo (HR 0.69, 96.71% CI: 0.55–0.87; P = 0.0006); statistically significant improvements in PFS and ORR were seen. With longer follow-up (minimum 12.7 mo), NIVO + IPI + chemo vs chemo continued to provide longer OS; median 15.6 vs 10.9 mo (HR 0.66, 95% CI: 0.55–0.80); 1-y OS rates were 63 vs 47%. Clinical benefit was consistent across all efficacy measures in key subgroups including by PD-L1 and histology. Grade 3–4 tx-related adverse events were reported in 47 vs 38% of pts in the NIVO + IPI + chemo vs chemo arms, respectively. Conclusions: CheckMate 9LA met its primary endpoint: a statistically significant improvement in OS was observed with NIVO + NSCLC-optimized IPI + a limited course of chemo vs chemo (4 cycles) in 1L advanced NSCLC. No new safety signals were reported. Clinical trial information: NCT03215706 .


2021 ◽  
Vol 28 (3) ◽  
pp. 2260-2269
Author(s):  
Daniel Tong ◽  
Lei Wang ◽  
Jeewaka Mendis ◽  
Sharadah Essapen

In the UK, Trifluridine-tipiracil (Lonsurf) is used to treat metastatic colorectal cancer in the third-line setting, after prior exposure to fluoropyrimidine-based regimes. Current data on the real-world use of Lonsurf lack long-term follow-up data. A retrospective evaluation of patients receiving Lonsurf at our Cancer Centre in 2016–2017 was performed, all with a minimum of two-year follow-up. Fifty-six patients were included in the review. The median number of cycles of Lonsurf administered was 3. Median follow-up was 6.0 months, with all patients deceased at the time of analysis. Median progression-free survival (PFS) was 3.2 months, and overall survival (OS) was 5.8 months. The median interval from Lonsurf discontinuation to death was two months, but seven patients received further systemic treatment and median OS gained was 12 months. Lonsurf offered a slightly better PFS but inferior OS to that of the RECOURSE trial, with PFS similar to real-world data previously presented. Interestingly, 12.5% had a PFS > 9 months, and this cohort had primarily left-sided and RAS wild-type disease. A subset received further systemic treatment on Lonsurf discontinuation with good additional OS benefit. Lonsurf may alter the course of disease for a subset of patients, and further treatment on progression can be considered in carefully selected patients.


2021 ◽  
Vol 39 (3_suppl) ◽  
pp. 71-71
Author(s):  
Azim Jalali ◽  
Hui-Li Wong ◽  
Rachel Wong ◽  
Margaret Lee ◽  
Lucy Gately ◽  
...  

71 Background: For patients with refractory metastatic colorectal cancer (mCRC) treatment with Trifluridine/Tipiracil, also known as TAS-102, improves overall survival. In Australia, TAS-102 was initially made available locally through patients self-funding, later via an industry sponsored Medicine Access Program (MAP) and then via the Pharmaceutical Benefits Scheme (PBS). This study aims to investigate the efficacy and safety of TAS-102 in real world Australian population. Methods: A retrospective analysis of prospectively collected data from the Treatment of Recurrent and Advanced Colorectal Cancer (TRACC) registry was undertaken. The characteristics and outcomes of patients receiving TAS-102 were assessed and compared to all TRACC patients and those enrolled in the registration study (RECOURSE). Results: Across 13 sites, 107 patients were treated with TAS-102 (non-PBS n = 27, PBS n = 80), The median number of patients per site was 7 (range: 1-17). The median age was 60 years (range: 31-83), compared to 67 for all TRACC patients and 63 for RECOURSE. Comparing registry TAS-102 and RECOURSE patients, 75% vs 100% were ECOG performance status 0-1, 74% vs 79% had initiated treatment more than 18 months from diagnosis of metastatic disease and 39% vs 49% were RAS wild type. Median time on treatment was 10.4 weeks (range: 1.7-32). Median clinician assessed progression-free survival was 3.3 compared to RECIST defined PFS of 2 months in RECOURSE study, while median overall survival was the same at 7.1 months. Two patients (2.3%) had febrile neutropenia and there were no treatment-related deaths in the real-world series, where TAS102 dose at treatment initiation was at clinician discretion. In the RECOURSE study there was a 4% febrile neutropenia rate and one treatment-related death. Conclusions: TRACC registry patients treated with TAS102 were younger than both TRACC patients overall and those from the RECOURSE trial. Less strict application of RECIST criteria and less frequent imaging may have contributed to an apparently longer PFS. However overall survival outcomes achieved with TAS102 in real world patients were comparable to findings from this pivotal trial with an acceptable rate of major adverse events.


2020 ◽  
Author(s):  
Yuki Mukai ◽  
Yuichiro Hayashi ◽  
Izumi Koike ◽  
Toshiyuki Koizumi ◽  
Madoka Sugiura ◽  
...  

Abstract Background: We compared outcomes and toxicities between concurrent retrograde super-selective intra-arterial chemoradiotherapy (IACRT) and concurrent systemic chemoradiotherapy (SCRT) for gingival carcinoma (GC). Methods: We included 84 consecutive patients who were treated for non-metastatic GC ≥ stage III, from 2006 to 2018, in this retrospective analysis (IACRT group: n=66; SCRT group: n=18).Results: The median follow-up time was 24 (range: 1–124) months. The median prescribed dose was 60 (6–70.2) Gy (IACRT: 60 Gy; SCRT: 69 Gy). There were significant differences between the two groups in terms of 3-year overall survival (OS; IACRT: 78.8%, 95% confidence interval [CI]: 66.0–87.6; SCRT: 50.4%, 95% CI: 27.6–73.0; P = 0.039), progression-free survival (PFS; IACRT: 75.6%, 95% CI: 62.7–85.2; SCRT: 42.0%, 95% CI: 17.7–70.9; P = 0.028) and local control rates (LC; IACRT: 77.2%, 95% CI: 64.2–86.4; SCRT: 42.0%, 95% CI: 17.7–70.9; P = 0.015). In univariate analysis, age ≥ 65 years, decreased performance status (PS) and SCRT were significantly associated with worse outcomes (P < 0.05). In multivariate analysis, age ≥ 65 years, clinical stage IV, and SCRT were significantly correlated with a poor OS rate (P < 0.05). Patients with poorer PS had a significantly worse PFS rate. Regarding acute toxicity, 22 IACRT patients had grade 4 lymphopenia, and osteoradionecrosis was the most common late toxicity in both groups.Conclusions: This is the first report to compare outcomes from IACRT and SCRT among patients with GC. ALL therapy related toxicities were manageable. IACRT is an effective and safe treatment for GC.


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