Safety and efficacy of anti-PD-1 in patients with baseline cardiac, renal, or hepatic dysfunction
© The Author(s). 2016
Received: 22 July 2016
Accepted: 13 September 2016
Published: 18 October 2016
Anti-PD-1 therapy is increasingly used in various advanced malignancies. Patients with baseline organ dysfunction are largely excluded from clinical trials. Therefore it is unclear whether anti-PD-1 therapy is safe or effective in this setting. Further, these patients are often not candidates for other anti-cancer therapies, highlighting their need for active treatment options.
We performed a retrospective analysis of patients from multiple centers with advanced solid tumors and baseline organ dysfunction who received anti-PD-1 therapy. Organ dysfunction was defined as cardiac (left ventricular ejection fraction ≤45 %), renal (creatinine ≥2 mg/dL or GFR ≤30 ml/min) or hepatic dysfunction (evidence of cirrhosis on imaging or AST, ALT or bilirubin ≥3x ULN). We assessed change in organ dysfunction, immune related adverse events (irAEs), response rate, progression free survival (PFS) and overall survival (OS).
We identified 27 patients eligible for inclusion with the following diseases: renal cell carcinoma (n = 8), melanoma (10), non-small cell lung cancer (3), small cell lung cancer (2) and urothelial bladder cancer (4). Baseline organ dysfunction included renal dysfunction (n = 17), hepatic dysfunction (7), cardiac dysfunction (11), including >1 organ dysfunction (8). Worsening organ dysfunction requiring hospitalization or dose delays occurred in 8 patients (30 %) although in most cases this was thought not-drug related and resolved with supportive care. Grade 3 irAEs occurred in 2 pts (7 %; hepatitis and colitis). Thirteen of 27 patients had ongoing treatment benefit (objective response or stable disease) at data collection (48 %). Eleven patients had primary progressive disease (41 %), 11 had stable disease (41 %), 4 had partial responses (15 %), and one had a complete response (4 %). Overall, median PFS was 168 days. Median OS was not reached.
In our experience, anti-PD-1 agents in this group of patients with cardiac, hepatic or renal dysfunction were associated with tolerable irAEs and infrequent manageable worsening of organ dysfunction. Further, objective responses and prolonged PFS were observed in a number of patients. Thus, patients with baseline organ dysfunction may be considered for anti-PD-1 therapy with appropriate clinical monitoring.
KeywordsAnti-PD-1 Nivolumab Pembrolizumab Melanoma Organ Dysfunction Cardiac Renal Hepatic
Agents that block the interaction between programmed death-1 receptor and its ligand (PD-1/PD-L1) inhibit this negative immune regulator and thereby unleash anti-tumor immune responses. These agents, including nivolumab and pembrolizumab, have produced objective responses, many of which are durable, in numerous solid and hematologic malignancies [1–8]. As these agents are incorporated into standard treatment algorithms, questions have arisen regarding their use in patient populations excluded from clinical trials, including those with organ dysfunction.
Advanced malignancies have traditionally been treated with cytotoxic chemotherapy. Unfortunately, many patients have limited baseline organ function and/or performance status and are unable to receive optimal chemotherapy regimens. As such, they may have extremely limited therapeutic options. Due to their pharmacokinetic and pharmacodynamic properties, cytotoxic chemotherapies frequently result in bone marrow suppression, kidney and liver dysfunction, and cardiac toxicity. In patients that are further limited by baseline organ dysfunction, chemotherapy may exacerbate existing organ injury or result in decreased clearance or metabolism, increasing toxicities. By contrast, monoclonal antibodies are metabolized to peptides and amino acids by circulating phagocytic cells or by their target antigen-containing cells, rather than through the liver and kidneys . Monoclonal antibodies bound to protective receptors are protected from degradation, explaining their exceptionally long half-lives .
These pharmacologic and immune properties result in a distinct toxicity profile specific to immunotherapies. These idiosyncratic adverse events, termed immune related adverse events (irAEs), include colitis, pneumonitis, hepatitis, nephritis, and endocrinopathies . Although usually manageable with corticosteroids, irAEs represent a significant cause of morbidity and rarely mortality.
The effects of anti-PD-1 in patients with baseline organ dysfunction have not been explored. We hypothesized that, based on their pharmacokinetics and mechanism of action, anti-PD-1 therapies would not induce worsening organ dysfunction or high rates of irAEs in this population. To address, we performed a retrospective analysis of patients from four centers with pre-existing organ dysfunction treated with anti-PD-1 agents. We assessed safety endpoints, including irAEs and worsening organ dysfunction, and efficacy endpoints.
Eligible patients were 18 years of age or older, had a confirmed advanced malignancy, and had received at least one dose of either pembrolizumab or nivolumab between 6/1/2013 and 12/31/2015. Further inclusion criteria included access to medical records and baseline organ dysfunction. Organ dysfunction was defined as the following: 1) creatinine ≥2 mg/dL or estimated glomerular filtration rate (eGFR) ≤ 30 mL/min; 2) aspartate aminotransferase (AST), alanine aminotransferase (ALT), or total bilirubin ≥ 3 times institution upper limit of normal, or evidence of cirrhosis on imaging studies; and 3) ejection fraction ≤ 45 %. These particular organ systems were chosen since they often preclude clinical trial enrollment when dysfunctional. Dysfunction of other organs, including lungs, bone marrow, and brain were not assessed due to less objective measurements, less routine monitoring, and multifactorial nature of dysfunction. The cutoffs for particular organ dysfunction were somewhat arbitrary, but would often exclude patients from many clinical trials and/or from various chemotherapy regimens. Key exclusion criteria included patients who received combination immunotherapy with multiple agents (e.g. ipilimumab + nivolumab).
This was a multicenter, retrospective analysis of patients with baseline organ dysfunction who received either pembrolizumab or nivolumab for the treatment of advanced malignancies. We collected patient demographics, organ function, medical co-morbidities, and Eastern Cooperative Group performance status (ECOG PS) at baseline.
Safety endpoints were (1) new or progressive organ dysfunction defined as baseline dysfunction above, (2) hospitalization rate, and (3) adverse events as defined in the National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE version 4.03). Efficacy outcomes were (1) progression-free survival (PFS), (2) overall survival (OS), and (3) response rate per Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1.
Baseline demographics and treatment characteristics were analyzed using descriptive statistics, listed with frequencies and percentages for categorical variables and medians and ranges for continuous variables. PFS was defined as time from first dose of anti-PD-1 therapy to progression of disease via scans or documentation of progression in provider notes. OS was defined as the time from first dose of therapy to death from any cause. All surviving patients were censored at the time of last follow up. Survival distributions were estimated using the Kaplan-Meier method.
Baseline features (n = 27)
Median age, years (range)
≥2 prior therapies
2 organ dysfunctions
Median number of doses (range)
Renal cell carcinoma
8 (30 %)
10 (37 %)
Non-small cell lung cancer
3 (11 %)
Small cell lung cancer
2 (7 %)
Urothelial cell carcinoma
4 (15 %)
Among 17 patients with renal dysfunction, 3 were on hemodialysis or peritoneal dialysis. Causes of renal dysfunction were diverse, but included diabetes, hypertension, prior therapies (tyrosine kinase inhibitors), and nephrectomy (for RCC). Median creatinine was 2.7 (range 2–7.2 in the setting of hemodialysis). Among 7 patients with hepatic dysfunction, 4 had evidence of cirrhosis on imaging, including 2 with splenomegaly and gastroesophageal varices. Cirrhosis was caused by alcohol ingestion (n = 3) and hepatitis C (n = 1). Two patients had elevated bilirubin (baseline of 2.1 and 4.0 respectively), and two patients had elevated liver function tests (AST 123–150), all caused by metastatic disease. Among 11 patients with cardiac dysfunction, ejection fraction ranged from 10 to 45 %. Causes of cardiac dysfunction were primarily due to ischemia but also included alcoholic cardiomyopathy (n = 1) and several patients with hypertension and prior tyrosine kinase inhibitors in addition to coronary artery disease.
Immune-related adverse events
Grades 1/2 (N, %)
Grades 3/4 (N, %)
1 (4 %)
1 (4 %)
1 (4 %)
1 (4 %)
2 (7 %)
4 (15 %)
2 (7 %)
1 (4 %)
3 (11 %)
1 (4 %)
Organ dysfunction in individual patients
Baseline organ dysfunction
Worsening dysfunction (grade)
Renal and hepatic
Creatinine 2.6, cirrhosis on imaging
Acute kidney injury (2)
Acute kidney injury (1)
Renal and cardiac
Creatinine 2.6, Ejection fraction 40 %
Acute kidney injury (1), volume overload (3)
Ejection fraction 30 %
Decompensated heart failure (3)
Ejection fraction 20 %
Decompensated heart failure (3)
Liver and cardiac
Ejection fraction 45 %, cirrhosis on imaging
Volume overload and decompensated heart failure (3)
To further assess the safety of anti-PD-1 therapy in this group of patients with significant medical co-morbidities, we evaluated whether patients were hospitalized following anti-PD-1. Ten (37 %) patients were hospitalized in the three months after the start of therapy, including 5 for organ dysfunction, and 5 for other reasons, primarily sepsis and syncope. Notably, at least 6 patients (22 %) were also hospitalized within 3 months prior to therapy (albeit with incomplete records in some cases); thus the attribution of anti-PD-1 for these findings is unclear.
Response to therapy
1 (4 %)
4 (15 %)
11 (41 %)
11 (41 %)
In this study, use of anti-PD-1 therapy in patients with baseline organ dysfunction resulted in rates of irAEs similar to previously reported clinical trials including patients without organ dysfunction. In this heavily pre-treated population with multiple comorbid illnesses, we demonstrate encouraging PFS and OS. Notably, exacerbation of baseline organ dysfunction was relatively uncommon, and was reversible with standard supportive care (e.g. diuresis or intravenous fluid administration). We speculate that the volume of fluid given with anti-PD-1 therapy may have contributed to progression of organ dysfunction, although we cannot rule out a drug-specific effect. While these data are immature, they suggest relative safety and efficacy in this patient population without excess risk of irAEs that resulted in worsening organ function. When taken in context with the favorable pharmacokinetics of pembrolizumab and nivolumab, anti-PD-1 therapies are a viable treatment option for this population.
Patients with baseline organ dysfunction represent a population that may be more susceptible to adverse events and is commonly excluded from clinical trials. These patients may be unable to tolerate traditional cytotoxic chemotherapy regimens due to organ dysfunction and poor performance status. Because of this, treatment options and data to guide treatment decisions may be limited. They have also been excluded from clinical trials of immunotherapies, such as nivolumab and pembrolizumab, with pharmacokinetic profiles more amenable to this population. Our study showed that anti-PD-1 agents may be a feasible alternative for this challenging population.
This study adds to a growing body of literature for patients with common, relevant medical co-morbidities that have been excluded from anti-PD-1 clinical trials. Recent data from a retrospective multicenter study evaluated the tolerability of ipilimumab in patients with baseline autoimmune diseases and similarly found that these therapies may be reasonable options for patients who are not traditionally included in standard clinical trials . Other groups have reported their experiences with anti-PD-1 treatment in patients with prior organ transplant and ongoing immunosuppression, as well as patients with pre-existing hepatitis C and human immunodeficiency virus [13–15]. While these agents seemed largely safe and effective in patients with autoimmunity and hepatitis C, several cases of rejection have been observed in the organ transplant population. Interestingly, and perhaps surprisingly, ipilimumab appears to cause fewer rejection complications than does anti-PD-1 [16–18]. Further study in these clinically relevant populations is needed.
Our study has several other limitations. Patients received treatment at four different centers over multiple years, potentially resulting in variability in the quality of data capture. Patient numbers overall were limited, limiting the ability to draw definitive conclusions. Additionally, the patients in this cohort had a median ECOG PS of 1 with relatively few hospitalizations prior to treatment. As such, they may represent a relatively healthier group of patients with baseline organ dysfunction. Thus, this study may not fully capture safety and efficacy of anti-PD-1 in debilitated patients with more extensive co-morbidities. Because the patients in this study had various advanced malignancies, disease-specific conclusions cannot be made. However, this is the largest study of patients with solid tumors and significant baseline organ dysfunction treated with anti-PD-1 therapy to our knowledge.
In conclusion, anti-PD-1 agents are associated with tolerable irAEs and relatively infrequent progressive organ dysfunction in patients with advanced malignancies and baseline organ dysfunction. Objective responses and prolonged PFS were observed. Prospective analyses and longer term follow-up are required to validate these findings.
Congestive heart failure
Common Terminology Criteria for Adverse Events
- ECOG PS:
Eastern cooperative oncology group performance status
Estimated glomerular filtration rate
Human immunodeficiency virus
Immune related adverse event
Non-small cell lung cancer
Programmed death receptor 1
Programmed death receptor ligand 1
Progression free survival
Renal cell carcinoma
Response evaluation criteria in solid tumors
Small cell lung cancer
Availability of data and materials
The dataset supporting the conclusions of this article is included within the article.
BK, RJ, SR, RC, and ZE collected clinical data. BK, RJ, DJ, and MH analyzed data and drafted the manuscript. IP, LH, AM, JS, SR, RC, ZE, and DJ provided patients and clinical data. All authors provided critical revisions, read and approved the final manuscript.
As in title page.
Drs. Kanz, Eroglu, Pollack, Johnpulle, Rapisuwon, Morgans, Horn, and Puzanov have no competing interests. Dr. Conry is on the Merck Speakers Bureau. Dr. Sosman is on advisory boards for Merck and Array. Dr. Johnson is on advisory boards for BMS and Genoptix.
Consent for publication
Written informed consent was obtained from the patient for publication of their individual details and accompanying images in this manuscript. The consent form is held by the authors and is available for review by the Editor-in-Chief.
Ethics approval and consent to participate
Each site received approval from their respective institutional review boards (IRBs) to perform retrospective studies using de-identified data, with waiver of consent (Vanderbilt, Moffitt, UAB, Georgetown).
Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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