高齢者栄養リスク指数は,大腸がんの高齢患者の予後を予測する:多センター研究
Kazuki Otani1, Keisuke Kazama2, Toru Aoyama2
1Department of Surgery, Yokohama City University, Yokohama, Japan otani.kaz.tt@yokohama-cu.ac.jp.
Anticancer research
|August 28, 2025
まとめ
老年栄養リスク指数 (GNRI) は,高齢の結腸直腸がん (CRC) 患者の長期的な結果を予測します. 低GNRIスコアは,全生存率と再発のない生存率の低下を示し,その予後値を強調します.
科学分野:
- 老年腫瘍学
- 手術腫瘍学
- 栄養学
背景:
- 結腸直腸がん (CRC) は,特に高齢者に影響を及ぼす世界的な健康問題です.
- 高齢のCRC患者では栄養不良が多く,治療の有効性と予後には悪影響を及ぼします.
- 老年栄養リスク指数 (GNRI) は,高齢者の栄養状態を評価するための有効なツールです.
研究 の 目的:
- 大腸がんの治癒用切除を施された高齢患者における手術前高齢栄養リスク指数 (GNRI) と長期的な予後との関連を調査する.
- この患者コホートにおける全生存期 (OS) と再発性生存期 (RFS) の独立した予後因子として機能するかどうかを判断する.
主な方法:
- ステージ0〜IIIの結腸直腸腺がんを患った65歳以上の患者1, 176人を対象とした多中心の遡及コホート研究.
- 患者は高GNRI (GNRI ≥98) と低GNRI (GNRI < 98) のグループに分類された.
- 全体の生存率 (OS) と再発のない生存率 (RFS) は,カプラン- メイヤーとコックスの比例リスクモデルを用いて分析された.
主要な成果:
- 低GNRI群は,女性の右側結腸がん,進行したT段階の腫瘍,および高GNRI群と比較して術後の合併症の増加を示した.
- 多変量分析により,GNRIはOSとRFSの両方の独立した予後因子として確認されました.
- 3年間のOS率は91. 4% (高GNRI) と80. 6% (低GNRI) で,3年間のRFS率は84. 8% (高GNRI) と73. 8% (低GNRI) であった.
- 低GNRI群 (16. 7%) は高GNRI群 (10. 5%) よりも血性再発が著しく多かった.
結論:
- 術前GNRIは,高齢のCRC患者における長期的アウトカムの有意な独立した予後要因である.
- GNRIは,従来のステージングシステムを補完する貴重な予測情報を提供します.
- この簡単に計算できる指標は,手術前治療の強化を必要とする高リスク患者を特定するために,臨床実務に統合できます.
関連する概念動画
Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
413
Various diagnostic tests are employed in the diagnostic process for Inflammatory Bowel Disease (IBD), particularly to differentiate between Crohn's disease and ulcerative colitis.
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...
413
Cancer Survival Analysis
448
Cancer survival analysis focuses on quantifying and interpreting the time from a key starting point, such as diagnosis or the initiation of treatment, to a specific endpoint, such as remission or death. This analysis provides critical insights into treatment effectiveness and factors that influence patient outcomes, helping to shape clinical decisions and guide prognostic evaluations. A cornerstone of oncology research, survival analysis tackles the challenges of skewed, non-normally...
448
Assessment of the Gastrointestinal System II: Health Perception Pattern
162
Assessing the gastrointestinal (GI) system is a complex process that begins with collecting subjective data. This data, collected through patient interviews, provides crucial insights into the patient's health history, perception patterns, and lifestyle habits, all contributing significantly to GI health.
Health Perception Patterns
Health perception patterns offer valuable insights into a patient's lifestyle habits and how they may impact their GI health. These patterns include:
Health Perception Patterns
Health perception patterns offer valuable insights into a patient's lifestyle habits and how they may impact their GI health. These patterns include:
162
Urinary Tract Calculi IV: Nutrition Therapy and Prevention
29
Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...
29
Chronic Kidney Disease III: Interprofessional Care
77
Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
77
Enteral Nutrition II: Nasointestinal and Gastrostomy Feeding
282
Enteral nutrition encompasses various methods of delivering nutrition directly to the gastrointestinal (GI) tract, bypassing traditional oral intake. It is particularly beneficial for patients who cannot eat by mouth but have a functioning digestive system. Key methods include nasointestinal feeding, gastrostomy, and jejunostomy, each suited to different clinical scenarios based on the patient's needs and condition.
Nasointestinal Feeding
Nasointestinal feeding involves placing a tube...
Nasointestinal Feeding
Nasointestinal feeding involves placing a tube...
282


