J Cancer 2019; 10(10):2139-2144. doi:10.7150/jca.31217 This issue Cite

Research Paper

Efficacy and Safety of Nivolumab in Patients with Advanced Non-small-cell Lung Cancer and Poor Performance Status

Hideyuki Katsura1, Yukio Suga2, Tomoyuki Araya3 Corresponding address, Toshiyuki Kita3, Taro Yoneda4, Nobuyoshi Tanaka5, Ayumi Kawabata1, Sotoki Ishita1, Hiroki Mase6

1. Department of Pharmacy, Komatsu Municipal Hospital
2. Department of Clinical Drug Informatics, Faculty of Pharmacy, Institute of Medical, Pharmaceutical & Health Science, Kanazawa University
3. Department of Respiratory Medicine, National Hospital Organization Kanazawa Medical Center
4. Department of Respiratory Medicine, Komatsu Municipal Hospital
5. Department of Surgery, Komatsu Municipal Hospital
6. Department of Pharmacy, National Hospital Organization Kanazawa Medical Center

Citation:
Katsura H, Suga Y, Araya T, Kita T, Yoneda T, Tanaka N, Kawabata A, Ishita S, Mase H. Efficacy and Safety of Nivolumab in Patients with Advanced Non-small-cell Lung Cancer and Poor Performance Status. J Cancer 2019; 10(10):2139-2144. doi:10.7150/jca.31217. https://www.jcancer.org/v10p2139.htm
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Abstract

Background: Nivolumab efficacy in patients with non-small-cell lung cancer (NSCLC) and performance status (PS) of 2-4 is unclear. We aimed to compare survival, treatment efficacy, and safety in patients with NSCLC with poor PS who received nivolumab plus best supportive care (BSC) with those in patients who received BSC alone in a palliative care unit (PCU).

Patients and methods: This retrospective study included 99 consecutive patients with NSCLC who received nivolumab plus BSC or BSC alone between December 2015 and March 2018.

Results: In total, 43 patients with PS of 0-1 (good PS group) and 20 patients with PS of 2-4 (poor PS group) received nivolumab plus BSC; the remaining 36 patients received BSC alone in the PCU (PC group). Median overall survival was 32 days [95% confidence interval (CI), 21-43] in the poor PS group and 31 days (95% CI, 25-37) in the PC group (hazard ratio, 0.653; 95% CI, 0.368-1.158; P = 0.137). Moreover, median overall survival in patients with PS of 3 or 4 among the poor PS group was not significantly longer than that in the PC group (HR, 1.235; 95% CI, 0.646-2.360; P = 0.516). The frequency of severe pneumonitis in the poor PS group was significantly higher than that in the good PS group (25% vs. 2%, P = 0.010).

Conclusion: Survival benefit of nivolumab in patients with NSCLC with poor PS, especially 3 or 4, was not confirmed. Further studies with larger numbers of patients are required to confirm our results.

Keywords: Clinical practice, Immune checkpoint inhibitor, Best supportive care, Overall survival, Pneumonitis

Introduction

Non-small-cell lung cancer (NSCLC) is still the leading cause of cancer-related deaths worldwide [1]. The advent of cancer immunotherapy represents the most important innovation in the treatment of NSCLC over the last few decades. Two phase III studies have demonstrated the favorable safety profile of Nivolumab [a fully human programmed cell death protein 1 (PD-1) immune checkpoint inhibitor antibody] and its superiority over docetaxel [a standard second line treatment for patients with advanced NSCLC with Eastern Cooperative Oncology Group Performance Status (PS) of 0 or 1] with respect to overall survival [2, 3]. Moreover, the estimated 3-year overall survival rate of patients with NSCLC treated with nivolumab was recently reported to be 17% [4]. However, much of the available evidence of the benefits of nivolumab emanates from studies on patients with PS of 0 or 1. Although PS of 2-4 was shown to be associated with early progression in patients with NSCLC receiving nivolumab [5-12], the survival benefit of nivolumab in patients with PS of 2 remains controversial; in a phase II trial (CheckMate 171) the efficacy and tolerability in patients with PS of 2 was comparable to that in the overall population [13]. In addition, patients with PS of 3 or 4 are considered unfit for anticancer drugs and were recommended to receive best supportive care (BSC) [14]. Therefore, it is possible that among patients with PS of 2-4, the benefit of nivolumab in patients with PS of 3 or 4 may be different from that in patients with PS of 2. However, the survival benefit of nivolumab plus BSC compared with BSC alone in patients with PS of 3 or 4 is not well characterized. In this study, we retrospectively investigated the efficacy and safety of nivolumab therapy in patients with NSCLC having poor PS, especially 3 or 4, and assessed the survival outcomes. The objective was to evaluate the benefit of nivolumab treatment in these patients.

Patients and methods

Search strategy

Medical records of patients were retrospectively reviewed. We collected data pertaining to consecutive patients with advanced or recurrent NSCLC who received nivolumab as first immunotherapy or were admitted to the palliative care unit (PCU) between December 2015 and March 2018 at the Komatsu Municipal Hospital and the National Hospital Organization Kanazawa Medical Center. The typical reason for admission to our PCU was deterioration of performance status owing to disease progression, adverse events of chemotherapy, and worsening of comorbidities. Patients who received at least one dose of nivolumab (3 mg/kg intravenously every 2 weeks) plus BSC and patients who received BSC alone in the PCU were eligible for this study. The patients in the PCU who were previously treated with nivolumab or had PS of 0-2 were excluded from the analysis. This study was approved by the institutional review boards of the Komatsu Municipal Hospital (29-26) and the National Hospital Organization Kanazawa Medical Center (H30-003).

Data Collection

Data pertaining to the following variables were collected: age, gender, smoking history, PS, histologic type, epidermal growth factor receptor mutation status, anaplastic lymphoma kinase fusion genes, the number of prior treatment regimens, overall survival, progression-free survival, response rate, and nivolumab-related adverse events. Survival of patients who received nivolumab was calculated as the time from initiation of this drug to death from any cause or last follow-up (May 22, 2018). Similarly, the survival of patients who received BSC alone was calculated as the time from admission to the PCU to death from any cause or last follow-up. Progression-free survival was defined as the time from initiation of nivolumab to objective evidence of tumor progression [as determined by the Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1], death from any cause or last follow-up, whichever occurred first. The response to nivolumab was assessed using RECIST version 1.1. The safety profile was assessed and graded using the Common Terminology Criteria for Adverse Events, version 4.03.

Statistical analysis

Between-group differences with respect to baseline characteristics were assessed using unpaired t-test, Fisher's exact test, Chi-squared test, and Mann-Whitney U-test for categorical variables. Overall survival and progression-free survival were assessed by Kaplan-Meier method, and between-group differences assessed using the log-rank test. Hazard ratios (HR) and confidence intervals (CI) were estimated using a Cox proportional-hazards model. Adverse events and the response to nivolumab were assessed by Fisher's exact test and Chi-squared test. All statistical analyses were performed using the SPSS version 24.0 (IBM Corp., Armonk, NY, USA). P values less than 0.05 were considered statistically significant.

Results

Patients and treatment

A total of 99 consecutive patients were enrolled in this study. Of these, 63 patients were treated with nivolumab: 68% (43/63) patients had a PS score of 0-1 (good PS group) and 32% (20/63) patients had a PS score of 2 to 4 (poor PS group). Out of 46 patients who were admitted to the PCU during the study reference period, 36 patients were enrolled (PC group). Eight patients with a history of nivolumab treatment and 2 patients who had PS of 2 were excluded from the analysis. Patient characteristics are shown in Table 1. The median age of patients in the poor PS group was 69 years (range, 55-84 years). Further, 80% (16/20) of these patients were men, and 50% (10/20) were receiving nivolumab as the second-line treatment. The proportion of female, never smoked, PS of 3 or 4, adenocarcinoma and positive EGFR mutation status in the poor PS group were significantly lower than that in the PC group (20% vs. 50%, P = 0.028, 5% vs. 50%, P = 0.001, 65% vs. 100% P < 0.001, 45% vs. 81% P = 0.010, and 10% vs. 36% P = 0.008, respectively). The proportion of current or former smokers and patients with PS of 3 among the PS 3 or 4 group were significantly higher than that in the PC group (92% vs. 50%, P = 0.007 and 92% vs. 56% P = 0.018, respectively). There was little data available on tumor programmed death-ligand 1 (PD-L1) expression because routine tumor immunostaining for PD-L1 was not performed. Nivolumab was administered at a standard dose of 3 mg/kg every 2 weeks. The median treatment cycle of nivolumab was 1 in the poor PS group and 8 in the good PS group (P < 0.001).

Efficacy

The median follow-up was 90 days (range: 2-789 days). At the time of last follow-up, 79 patients (80%) had died [19 (95%) in the poor PS group, 24 (56%) in the good PS group, and 36 (100%) in the PC group]. The median overall survival was 32 days (95% CI, 21-43) in the poor PS group, 412 days (95% CI, 236-588) in the good PS group, and 31 days (95% CI, 25-37) in the PC group (Fig. 1A). Overall survival in the poor PS group was not significantly longer than that in the PC group (HR, 0.653; 95% CI, 0.368-1.158; P = 0.137), although that in the good PS group was significantly longer than that in the PC group (HR, 0.061; 95% CI, 0.028-0.131; P < 0.001) (Fig. 1A). The median overall survival was significantly longer in patients with PS of 2 among the poor PS group than that in patients with PS of 3 or 4 among the poor PS group or that in the PC group (95 days vs. 28 days, HR, 0.266; 95% CI, 0.085-0839; P = 0.014, and 95 days vs. 31 days, HR, 0.283; 95% CI, 0.109-0.739; P = 0.006, respectively) (Fig 1B). Moreover, median overall survival in patients with PS of 3 or 4 among the poor PS group was not significantly longer than that in the PC group (HR, 1.235; 95% CI, 0.646-2.360; P = 0.516) (Fig. 1B). The median progression-free survival in the poor PS group was 28 days (95% CI, 6-44) as compared to 110 days (95% CI, 32-188) in the good PS group (HR, 4.050; 95% CI, 2.217-7.400; P < 0.001) (Fig. 2A). The median progression-free survival was significantly longer in patients with PS of 2 among the poor PS group than that in patients with PS of 3 or 4 among the poor PS group (65 days vs. 14 days, HR, 0.055; 95% CI, 0.007-0447; P < 0.001) (Fig 2B). The rates of confirmed objective response and disease control were 0% (95% CI, 0-23) and 15% (95% CI, 0-31) (P < 0.001) in the poor PS group, and 23% (95% CI, 11-36) and 72% (95% CI, 59-85) (P < 0.001) in the good PS group (Table 2).

 Table 1 

Patient Characteristics (n = 99).

CharacteristicsPS 2-4 (N = 20)PS 0/1 (N = 43)PC (N = 36)PS 2-4 vs. PS 0/1PS 2-4 vs. PCPS 3/4 vs. PS 2PS 3/4 vs. PC
PS 2 (N = 7)PS 3/4 (N = 13)Total (N = 20)p valuep valuep valuep value
Age (years)
Median69686970740.8820.1710.2150.100
Range64-8455-8055-8448-9044-91
Gender [n (%)]
Male6 (86)10 (77)16 (80)36 (84)18 (50)0.7320.0281.0000.093
Female1 (14)3 (23)4 (20)7 (16)18 (50)
Smoking status [n (%)]
Current or former smoker7 (100)12 (92)19 (95)39 (91)18 (50)1.0000.0011.0000.007
Never smoked01 (8)1 (5)4 (9)18 (50)
PS [n (%)]
000022 (51)0
100021 (49)0
27 (100)07 (35)00
3012 (92)12 (60)020 (56)<0.001<0.001<0.0010.018
401 (8)1 (5)016 (44)
Histology [n (%)]
Adenocarcinoma3 (43)6 (47)9 (45)23 (53)29 (81)0.7960.0100.0500.382
Squamous4 (57)5 (38)9 (45)18 (42)5 (14)
Others02 (15)2 (10)2 (5)2 (6)
Positive EGFR mutation status [n (%)]02 (15)2 (10)4 (9)13 (36)0.5880.0081.0000.069
Positive ALK translocation status [n (%)]00001 (3)1.0001.0001.0001.000
No driver or unknown [n (%)]7 (100)11 (85)18 (90)39 (91)22 (61)
Number of prior regimens [n (%)]0.937-0.115-
15 (71)5 (38)10 (50)21 (49)
22 (29)3 (23)5 (25)11 (25)
302 (15)2 (10)6 (14)
>303 (24)3 (15)5 (12)
Number of treatment cycles [n (%)]
Median2118<0.001
Range1-61-51-61-56
History of thoracic radiotherapy within one year [n (%)]1 (14)5 (38)6 (30)4 (9)2 (6)0.0540.354

Abbreviations: PS: performance status; PC: palliative care; EGFR: epidermal growth factor receptor; ALK: anaplastic lymphoma kinase.

 Figure 1 

Kaplan-Meier curves for overall survival of patients with PS of 0/1 or 2 to 4 treated with nivolumab and overall survival of patients in palliative care (A). Kaplan-Meier curves for overall survival of patients with PS of 2 and 3/4 treated with nivolumab and overall survival of patients in palliative care (B). Abbreviations: OS: overall survival; PS: performance status; PC: palliative care; CI: confidence interval.

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 Table 2 

Therapeutic response in patients treated with nivolumab, disaggregated by PS (0/1 vs. 2-4).

ResponsePS 0/1 (N = 43)PS 2-4 (N = 20)p value
No. (%) of patients by best overall response
Complete response2 (5)0
Partial response8 (18)0
Stable disease21 (49)3 (15)
Progressive disease12 (28)13 (85)
Overall response
No. (%) of patients10 (23)0<0.001
95% CI11 to 360 to 23
Disease control rate
No. (%) of patients31 (72)3 (15)<0.001
95% CI59 to 850 to 31

Abbreviations: PS: performance status; CI: confidence interval.

 Figure 2 

Kaplan-Meier curves for progression-free survival of patients with PS of 0/1 and 2 to 4 treated with nivolumab (A). Kaplan-Meier curves for progression-free survival of patients with PS of 2 and 3/4 treated with nivolumab (B). Abbreviations: PFS: progression free survival; PS: performance status; CI: confidence interval.

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Safety

Nivolumab-related adverse events observed in 2 or more patients are shown in Table 3. The incidence of any adverse events was similar between the poor PS and the good PS groups (75% vs. 63%; P = 0.339). However, the incidence of pneumonitis in the poor PS group was significantly higher than that in the good PS group (35% vs. 9%; P = 0.028). In particular, 5 patients (25%) in the poor PS group developed severe pneumonitis (2 patients with grade 3, 2 patients with grade 4, and 1 patient with grade 5); the incidence of severe pneumonitis was significantly higher than that in the good PS group (25% vs. 2%, P = 0.010). Out of the 5 patients with severe pneumonitis in the poor PS group, 1 patient (5%) died due to pneumonitis (grade 5), whereas no treatment-related death was observed in the good PS group. The proportion of patients with recent history (within one year) of thoracic radiotherapy (TRT) in the poor PS group was higher than that in the good PS group (30% vs. 9%, P = 0.054). However, there was no significant difference in the incidence of pneumonitis between patients with history of TRT and patients without history of TRT in the poor PS group (33% vs. 36%, P = 1.000) (Table 4). In addition, the incidence of fever in the poor PS group was significantly higher than that in the good PS group (35% vs. 2%, P = 0.001). In contrast, the incidence of rash in the good PS group was significantly higher than that in the poor PS group (19% vs. 0%, P = 0.047).

 Table 3 

Treatment-related adverse events reported in at least 2 patients.

EventPS 2-4 (n = 20)PS 0/1 (n = 43)Any GradeGrade ≥3
Any GradeGrade ≥ 3Any GradeGrade ≥ 3pp
Any event15 (75)6 (30)27 (63)6 (14)NSNS
Pneumonitis7 (35)5 (25)4 (9)1 (2)0.0280.010
Fever7 (35)01 (2)00.001NS
AST/ALT elevation4 (20)2 (10)4 (9)0NS0.097
Diarrhea2 (10)02 (5)0NSNS
Anorexia2 (10)01 (2)0NSNS
Mucositis oral1 (5)04 (9)1 (2)NSNS
Creatinine increased1 (5)1 (5)2 (5)0NSNS
Rash008 (19)1 (2)0.047NS
Fatigue006 (14)0NSNS
Pruritus006 (14)0NSNS
Rash acneiform003 (7)0NSNS
Lung infection002 (5)1 (2)NSNS
Hot flashes002 (5)0NSNS
Peripheral motor neuropathy002 (5)0NSNS
ALP elevation002 (5)0NSNS

Abbreviations: PS: performance status; NS: not significant; AST: aspartate aminotransferase; ALT: alanine aminotransferase; ALP: alkaline phosphatase.

 Table 4 

Correlation between pneumonitis incidence and a history of thoracic radiotherapy.

PS 0/1 (N = 43)PS 2-4 (N = 20)
History of TRT within one year
Yes (N = 4)No (N = 39)p valueYes (N = 6)No (N = 14)p value
No. (%) of patients
Pneumonitis
Yes0 (0)4 (10)<0.0012 (33)5 (36)1.000
No4 (100)35 (90)4 (67)9 (64)

Abbreviations: TRT, thoracic radiotherapy; PS, Performance status.

Discussion

In this study, patients with NSCLC with poor PS, especially 3 or 4, who received nivolumab plus BSC showed only limited survival benefit and experienced higher frequency and severity of treatment-related adverse events as compared to patients who received BSC alone. In our study, overall survival in the poor PS group was not significantly longer than that in the PC group (median overall survival: 32 vs. 31 days). Regarding the baseline characteristics, the proportion of patients who never smoked (5% vs.50%) and those with PS of 4 (5% vs.44%) in the poor PS group was lower than that in the PC group. Subgroup analyses of data from CheckMate 017 and 057 trials showed never-smoker status as a predictive factor of bad outcome in patients with advanced NSCLC who received nivolumab [2]. In addition, PS 4 was reported to be a bad prognostic factor in patients with advanced NSCLC [15]. Nevertheless, in this study, overall survival in the poor PS group was not apparently longer than that in the PC group. In a retrospective cohort study, PS ≥ 3 was significantly associated with poor progression-free survival in patients with advanced NSCLC who received nivolumab [11]. Furthermore, Fujimoto et al. reported that progression-free survival of patients with PS of 2 who received nivolumab was significantly longer than that of patients with PS of 3 or 4 [12]. Similarly, in our study, overall survival and progression-free survival of patients with PS of 2 were significantly longer than that in patients with PS of 3 or 4. Furthermore, overall survival in patients with PS of 3 or 4 was not significantly longer than those in the PC group. Therefore, our results suggest that BSC alone should be recommended to patients with PS of 3 or 4. However, perhaps patients with poor PS did not benefit from nivolumab because they only received 1 or 2 cycles. Patients with better PS might live longer to gain sufficient exposure to nivolumab and have an opportunity to respond. In a study by Haratani et al. immune-related adverse events were associated with increased progression-free survival and overall survival of patients with advanced or recurrent NSCLC who received nivolumab treatment [16]. Conversely, Borghaei et al. reported that severe adverse events, including pneumonitis, were associated with decreased overall survival of elderly patients with advanced NSCLC who received nivolumab treatment [17]. In this study, regardless of severe pneumonitis, the median overall survival in the poor PS group was comparable to that in the PC group. Therefore, we also believe that severe pneumonitis is likely to shorten survival time in the patients in the poor PS group. However, diagnosed pneumonitis based on imaging test alone; therefore, progression of lung cancer could have been misinterpreted as pneumonitis.

Several predictive biomarkers of clinical response to nivolumab have been reported. These include PD-L1 expression [18, 19], neutrophil-to-lymphocyte ratio [5], C-reactive protein-to-albumin ratio [7], C-reactive protein levels [8], carcinoembryonic antigen levels [10], lactate dehydrogenase levels [11], and advanced lung cancer inflammation index [20]. In a recent study, patients with NSCLC who received nivolumab with pretreatment neutrophil-to-lymphocyte ratio <5 showed significantly longer overall survival and progression-free survival as compared to those with pretreatment neutrophil-to-lymphocyte ratio ≥5 [21]. However, none of these biomarkers alone are definitive predictive biomarkers for the use of nivolumab. In our results, only 2 patients in the PS of 3 or 4 who had survival over 100 days (112 days and 114 days, respectively) had both pretreatment neutrophil-to-lymphocyte ratio <5 and C-reactive protein-to-albumin ratio <1 (date not shown). Therefore, we believe that a combination of these biomarkers may serve as an indicator for nivolumab treatment in patients with NSCLC having poor PS.

There are several limitations in this study. First, our study was retrospective in nature and included a small sample size, which limited the statistical power of the analyses. Second, data pertaining to PD-L1 expression was not available for most patients. Therefore, the survival benefit of nivolumab in patients with poor PS patients with high expression of PD-L1 could not be assessed. Third, the treatment timing and choice of regimens prior to nivolumab therapy were based on the discretion of the attending doctors, and therefore, not standardized among the patients.

Conclusions

Patients with NSCLC with poor PS, especially 3 or 4, showed no benefit from nivolumab treatment. Further studies with larger numbers of patients are required to confirm our results.

Abbreviations

BSC: best supportive care; CI: confidence interval; HR: Hazard ratios; NSCLC: non-small-cell lung cancer; PCU: palliative care unit; PD-1: programmed cell death protein 1; PD-L1: programmed death-ligand 1; PS: performance status; RECIST: Response Evaluation Criteria in Solid Tumors; TRT: thoracic radiotherapy.

Acknowledgements

We would like to thank maruzen (http://kw.maruzen.co.jp/kousei-honyaku/) for English language editing.

Ethics Committee Approval

This study was approved by the institutional review boards of the Komatsu Municipal Hospital and the National Hospital Organization Kanazawa Medical Center.

Competing Interests

The authors have declared that no competing interest exists.

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Author contact

Corresponding address Corresponding author: Tomoyuki Araya, Department of Respiratory Medicine, National Hospital Organization Kanazawa Medical Center, Shimoishibiki-machi 1-1, Kanazawa 920-8650, Japan. Tel: +81-76-262-4161; Fax: +81-76-222-2758; E-mail: komatsu_aloneco.jp


Received 2018-11-4
Accepted 2019-3-31
Published 2019-5-19


Citation styles

APA
Katsura, H., Suga, Y., Araya, T., Kita, T., Yoneda, T., Tanaka, N., Kawabata, A., Ishita, S., Mase, H. (2019). Efficacy and Safety of Nivolumab in Patients with Advanced Non-small-cell Lung Cancer and Poor Performance Status. Journal of Cancer, 10(10), 2139-2144. https://doi.org/10.7150/jca.31217.

ACS
Katsura, H.; Suga, Y.; Araya, T.; Kita, T.; Yoneda, T.; Tanaka, N.; Kawabata, A.; Ishita, S.; Mase, H. Efficacy and Safety of Nivolumab in Patients with Advanced Non-small-cell Lung Cancer and Poor Performance Status. J. Cancer 2019, 10 (10), 2139-2144. DOI: 10.7150/jca.31217.

NLM
Katsura H, Suga Y, Araya T, Kita T, Yoneda T, Tanaka N, Kawabata A, Ishita S, Mase H. Efficacy and Safety of Nivolumab in Patients with Advanced Non-small-cell Lung Cancer and Poor Performance Status. J Cancer 2019; 10(10):2139-2144. doi:10.7150/jca.31217. https://www.jcancer.org/v10p2139.htm

CSE
Katsura H, Suga Y, Araya T, Kita T, Yoneda T, Tanaka N, Kawabata A, Ishita S, Mase H. 2019. Efficacy and Safety of Nivolumab in Patients with Advanced Non-small-cell Lung Cancer and Poor Performance Status. J Cancer. 10(10):2139-2144.

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