Review Article

Relationship between Patients’ Baseline Characteristics and Survival Benefits in Immunotherapy-Treated Non-Small-Cell Lung Cancer: A Systematic Review and Meta-Analysis

Table 1

Characteristics of the studies and participants.

SourceTrial nameNCT #PhaseTotal pt #Cancer typeLine of therapyTreatment armsPt #OS HR (95% CI)SexPt #OS HR (95% CI)AgePt #OS HR (95% CI)ECO G PSPt #OS HR (95% CI)Smoking statusPt #OS HR (95% CI)

2015-Brahmer-N Engl J MedCheckMate 017NCT016420043272Squamous>1Nivolumab vs. docetaxel2720.59 (0.44-0.78)Male2080.57 (0.41-0.78)<651520.52 (0.35-0.75)0640.48 (0.24-0.99)Current/former smoker2500.59 (0.44-0.80)
Female640.67 (0.36-1.25)≥65 to <75910.56 (0.34-0.91)12060.54 (0.39-0.74)
2015-Borghaei-N Engl J MedCheckMate 057NCT016738673582Nonsquamous>1Nivolumab vs. docetaxel5820.75 (0.62-0.91)Male3190.73 (0.56-0.96)<653390.81 (0.62-1.04)01790.64 (0.44-0.93)Current/former smoker4580.70 (0.56-0.86)
Female2630.78 (0.58-1.04)≥65 to <752000.63 (0.45-0.89)14020.80 (0.63-1.00)Never smoked1181.02 (0.64-1.61)
2020- Herbst- J Clin OncolKEYNOTE-010NCT019056572or31033NSCLC>1Pembrolizumab vs. docetaxel10330.69 (0.60-0.80)Male6340.70 (0.58-0.84)<656040.62 (0.51-0.75)03470.78 (0.60-1.01)
Female3990.66 (0.52-0.83)≥654290.79 (0.63-1.00)16790.64 (0.54-0.76)
2017- Carbone-N Engl J MedCheckMate 026NCT020415333541NSCLC1Nivolumab vs. chemotherapy5411.08 (0.87-1.34)Male3320.97 (0.74-1.26)<652811.13 (0.83-1.54)01781.11 (0.74-1.66)Former smoker3681.09 (0.84–1.42)
Female2091.15 (0.79-1.66)≥652601.04 (0.77-1.41)≥13621.02 (0.79-1.32)Current smoker1071.05 (0.63–1.74)
Never smoked591.02 (0.54–1.93)
2017- Govindan-J Clin OncolNCT012856093749Squamous>1Ipilimumab+chemotherapy vs. placebo+chemotherapy7490.91 (0.77-1.07)Male6350.85 (0.71-1.02)<653800.82 (0.64-1.04)02590.99 (0.73-1.33)Heavy smoker6560.88 (0.73-1.05)
Female1141.33 (0.84-2.11)≥65 to <752981.06 (0.81-1.37)14850.86 (0.70-1.05)Former/light/nonsmoker831.19 (0.71-1.99)
2021-Corinne- J Thorac OncolPACIFICNCT021254613713NSCLC>1Durvalumab vs. placebo7130.70 (0.57–0.86)Male5000.75 (0.59–0.96)<653910.64 (0.48–0.86)03480.84 (0.62–1.15)Smoker6490.73 (0.59–0.91)
Female2130.59 (0.40–0.87)≥653220.77 (0.58–1.03)≥13650.59 (0.45–0.77)Nonsmoker640.42 (0.21–0.82)
2018-Barlesi- Lancet OncolJAVELIN lung 200NCT023951723529NSCLC>1Avelumab vs. docetaxel5290.90 (0.73-1.12)Male3670.83 (0.64-1.08)<652790.84 (0.63-1.13)01870.73 (0.50-1.08)Ever smoker4440·83 (0·66–1·04)
Female1621.08 (0.74-1.59)≥652500.98 (0.71-1.34)13420.99 (0.77-1.28)Never smoker841·69 (0·97–2·95)
2018- Fehrenbacher -J Thorac OncolOAKNCT0200822731225NSCLC>1Atezolizumab vs. docetaxel12250.80 (0.70-0.92)Male7580.79 (0.66-0.93)<656610.84 (0.70-1.01)04550.80 (0.63-1.02)Current/previous smoker10170·78 (0·67–0·90)
Female4670.81 (0.65-1.01)≥655640.75 (0.61-0.91)17700.77 (0.65-0.90)Never smoked2080·91 (0·65–1·29)
2018-Gandhi- N Engl J MedKEYNOTE- 189NCT025786803616Nonsquamous1Pembrolizumab+chemotherapy vs. placebo+chemotherapy6160.49 (0.38-0.64)Male3630.70 (0.50-0.99)<653120.43 (0.31-0.61)02660.44 (0.28-0.71)Current/former smoker5430.54 (0.41–0.71)
Female2530.29 (0.19-0.44)≥653040.64 (0.43-0.95)13460.53 (0.39-0.73)Never smoked730.23 (0.10–0.54)
2018-Paz- Ares-N Engl J MedKEYNOTE- 407NCT027754353559Squamous1Pembrolizumab+chemotherapy vs. placebo+chemotherapy5590.64 (0.49-0.85)Male4550.69 (0.51-0.94)<652540.52 (0.34-0.80)01630.54 (0.29-0.98)
Female1040.42 (0.22-0.81)≥653050.74 (0.51-1.07)13960.66 (0.48-0.90)
2019-Mok- LancetKEYNOTE- 042NCT0222089431274NSCLC1Pembrolizumab vs. chemotherapy (PD-L1 )12740.81 (0.71-0.93)Male9020.80 (0.68-0.94)<657070.81 (0.67-0.98)03900.77 (0.58-1.05)Never2821.00 (0.73-1.37)
Female3720.89 (0.68-1.17)≥655670.82 (0.66-1.01)18840.83 (0.71-0.98)Former7210.71 (0.59-0.86)
Current2710.95 (0.70-1.29)
2019-Reck-J Clin OncolKEYNOTE- 024NCT021427383305NSCLC1Pembrolizumab vs. platinum-based chemotherapy3050.63 (0.47-0.86)Male1870.54 (0.36-0.79)<651410.60 (0.38-0.96)01070.78 (0.44-1.37)Current650.81 (0.41-1.60)
Female1180.95 (0.56-1.62)≥651640.64 (0.42-0.98)11970.56 (0.39-0.81)Former2160.59 (0.41-0.85)
Never240.90 (0.11-7.59)
2019-ReckM- Lancet Respir MedIMpower150NCT0236614331202Nonsquamous1ABCP vs. BCP8000.76 (0.63-0.93)Male4790.73 (0.57-0.93)<654410.78 (0.60-1.00)03380.75 (0.53-1.07)Never smoker1590.66 (0.41-0.85)
Female3210.82 (0.61-1.12)65-742810.69 (0.49-0.96)14560.75 (0.59-0.94)Current/previous smoker6410.80 (0.65-0.98)
ACP vs. BCP8020.85 (0.71-1.03)Male4800.82 (0.64-1.04)<654490.76 (0.59-0.98)03590.85 (0.61-1.18)Never smoker1540.96 (0.62-1.49)
Female3220.88 (0.65-1.19)65-742840.97 (0.71-1.32)14400.84 (0.67-1.06)Current/previous smoker6480.82 (0.66-1.01)
2019-West- Lancet OncolIMpower130NCT023677813679Nonsquamous1Atezolizumab+carboplatin+nab-paclitaxel vs. chemotherapy6790·79 (0·64–0·98)Male4000.87 (0.66-1.15)<653410.79 (0.58-1.08)02800·85 (0·59–1·22)Never smoker650·55 (0·26–1·19)
Female2790.66 (0.46-0.93)≥653380·78 (0·58–1·05)13970·77 (0·58–1·00)Current/previous smoker6140·81 (0·65–1·02)
2020-Jotte-J Thorac OncolIMpower131NCT0236779431021Squamous1Atezolizumab+carboplatin+nab-paclitaxel vs. carboplatin+nab-paclitaxel6830·88 (0·73–1·05)Male5570·91 (0·75–1·12)<653260·89 (0·68–1·15)02250·96 (0·69–1·34)Never smoker550·85 (0·43–1·68)
Female1260·68 (0·44–1·04)65-742790·84 (0·63–1·13)14560·82 (0·66–1·02)Current/previous smoker6270·87 (0·72–1·05)
2019-Hellmann-N Engl J MedCheckMate 227NCT0247782631739NSCLC1Nivolumab+ipilimumab vs. chemotherapy11660.73 (0.64–0.84)Male7780.68 (0.57–0.80)<656110.70 (0.58–0.85)03950.70 (0.54–0.89)Never smoker1570.96 (0.66–1.41)
Female3880.89 (0.70–1.12)≥654420.76 (0.61–0.95)17630.77 (0.65–0.90)Current/previous smoker9960.72 (0.62–0.84)
2020-Herbst -N Engl J MedIMpower110NCT024093423572NSCLC1Atezolizumab vs. chemotherapy (high PD-L1 expression)2050.59 (0.40–0.89)Male1430.57 (0.35–0.93)<651020.59 (0.34–1.04)0730.42 (0.20–0.92)Never241.83 (0.63–5.31)
Female620.69 (0.34–1.39)65-74800.63 (0.34–1.19)11320.69 (0.43–1.10)Current490.35 (0.14–0.88)
Previous1320.60 (0.36–1.00)
2021-Nishio-J Clin OncolIMpower132NCT026574343578Nonsquamous1Atezolizumab+carboplatin/cisplatin+pemetrexed vs. carboplatin/cisplatin+pemetrexed5780.86 (0.71, 1.06)Male3840.93 (0.73, 1.18)<653210.88 (0.67, 1.16)02400.76 (0.55, 1.04)Never smoker670.78 (0.42, 1.43)
Female1940.76 (0.54, 1.09)≥652570.84 (0.63, 1.13)13360.99 (0.76, 1.27)Current/former smoker5110.89 (0.72, 1.09)

Abbreviations: HR = hazard ratio; OS = overall survival; ABCP =atezolizumab plus bevacizumab plus carboplatin plus paclitaxel; ACP =atezolizumab plus carboplatin plus paclitaxel; BCP =bevacizumab plus carboplatin plus paclitaxel.