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Relationship between cytokine gene single nucleotide polymorphisms and symptom burden and quality of life in lung cancer survivors.

ABSTRACT: Previous research has demonstrated that many lung cancer survivors report difficulties with symptom control and experience a poor quality of life (QOL). Although recent studies have suggested a relationship of single nucleotide polymorphisms (SNPs) in several cytokine genes with cancer susceptibility and prognosis, associations with symptom burden and QOL have not been examined. The current study was conducted to identify SNPs related to symptom burden and QOL outcomes in lung cancer survivors.All participants were enrolled in the Mayo Clinic Lung Cancer Cohort following diagnosis of lung cancer. A total of 1149 Caucasian lung cancer survivors completed questionnaires and had genetic samples available. The main outcome measures were symptom burden as measured by the Lung Cancer Symptom Scale and health-related QOL as measured by the Short-Form General Health Survey.Twenty-one SNPs in cytokine genes were associated with symptom burden and QOL outcomes. Our results suggested both specificity and consistency of cytokine gene SNPs in predicting outcomes.These results provide support for genetic predisposition to QOL and symptom burden and may aid in identification of lung cancer survivors at high risk for symptom management and QOL difficulties.

SUBMITTER: Rausch SM

PROVIDER: S-EPMC3083923 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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Relationship between cytokine gene single nucleotide polymorphisms and symptom burden and quality of life in lung cancer survivors.

Rausch Sarah M SM Clark Matthew M MM Patten Christi C Liu Heshan H Felten Sara S Li Yafei Y Sloan Jeff J Yang Ping P

Cancer 20100901 17

<h4>Background</h4>Previous research has demonstrated that many lung cancer survivors report difficulties with symptom control and experience a poor quality of life (QOL). Although recent studies have suggested a relationship of single nucleotide polymorphisms (SNPs) in several cytokine genes with cancer susceptibility and prognosis, associations with symptom burden and QOL have not been examined. The current study was conducted to identify SNPs related to symptom burden and QOL outcomes in lung ...[more]

PMID: 20564140

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Project description:BACKGROUND:Polypharmacy may be particularly burdensome near the end of life, as patients "accumulate" medications to treat and prevent multiple diseases. OBJECTIVE:To evaluate associations between polypharmacy, symptom burden, and quality of life (QOL) in patients with advanced, life-limiting illness (clinician-estimated, 1 month-1 year). DESIGN:Secondary analysis of baseline data from a trial of statin discontinuation. PARTICIPANTS:Adults with advanced, life-limiting illness. MAIN MEASURES:Polypharmacy was assessed by summing the number of non-statin medications taken regularly or as needed. Symptom burden was assessed using the Edmonton Symptom Assessment Scale (range 0-90; higher scores indicating greater symptom burden) and QOL was assessed using the McGill QOL Questionnaire (range 0-10; higher scores indicating better QOL). Linear regression models assessed associations between polypharmacy, symptom burden, and QOL. KEY RESULTS:Among 372 participants, 47% were age 75 or older and 35% were enrolled in hospice. The mean symptom score was 27.0 (standard deviation (SD) 16.1) and the mean QOL score was 7.0 (SD 1.3). The average number of non-statin medications was 11.6 (SD 5.0); one-third of participants took ≥ 14 medications. In adjusted models, higher polypharmacy was associated with higher symptom burden (coefficient 0.81; p < .001) and lower QOL (coefficient - .06; p = .001). Adjusting for symptom burden weakened the association between polypharmacy and QOL (coefficient - .03; p = .045) without a significant interaction, suggesting that worse quality of life associated with polypharmacy may be related to medication-associated symptoms. CONCLUSIONS:Among adults with advanced illness, taking more medications is associated with higher symptom burden and lower QOL. Attention to medication-related symptoms and shared decision-making regarding deprescribing are warranted in this setting. NIH TRIAL REGISTRY NUMBER:ClinicalTrials.gov Identifier for Parent Study - NCT01415934.

Dataset Information

Relationship between cytokine gene single nucleotide polymorphisms and symptom burden and quality of life in lung cancer survivors.

Publications

Relationship between cytokine gene single nucleotide polymorphisms and symptom burden and quality of life in lung cancer survivors.

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