Library
PubMed
research article
Professional

Preoperative Identification of Lymph Node Metastasis in Colorectal Cancer Using Noninvasive Circulating Tumor DNA Methylation Signatures: Results From a Prospective Study.

Source: PubMed, NCBI / U.S. National Library of Medicine

Diseases of the colon and rectumJi Hongli, Xu Mimi, Hu Yaowen, et al.Published 4/1/2026Last synced 6/2/2026Status: syncedPMID: 41378988DOI: 10.1097/DCR.0000000000004089

Lymph node metastasis is important for the management and surgical procedures of patients with colorectal cancer. Preoperative identification of D3 metastasis could help evaluate the necessity of D3 lymphadenectomy. No adequate noninvasive method has been developed to detect the status of lymph nodes. To establish a circulating tumor DNA methylation-based method to preoperatively identify lymph node metastasis and D3 metastasis in colorectal cancer. This is a prospective and paired diagnostic study. After an analysis of the genome-wide DNA methylation landscape, differential biomarkers were selected. A circulating tumor DNA methylation-based model for identifying lymph node metastasis was constructed with a machine learning algorithm. Its performance was compared with that of traditional methods. A nomogram was constructed by incorporating the circulating tumor DNA methylation-based model and clinicopathological predictors to identify D3 metastasis. In addition, a traditional clinicopathological method was constructed with the same method but without the circulating tumor DNA methylation-based model for identifying D3 metastasis. A comparison of the performance of the 2 models was performed. A single cancer center in China. A total of 206 patients with stage I to III colorectal cancer were recruited between June 2022 and September 2023. All patients underwent radical surgical resection and D3 lymphadenectomy without neoadjuvant treatment. The performance of identifying lymph

Abstract

Lymph node metastasis is important for the management and surgical procedures of patients with colorectal cancer. Preoperative identification of D3 metastasis could help evaluate the necessity of D3 lymphadenectomy. No adequate noninvasive method has been developed to detect the status of lymph nodes. To establish a circulating tumor DNA methylation-based method to preoperatively identify lymph node metastasis and D3 metastasis in colorectal cancer. This is a prospective and paired diagnostic study. After an analysis of the genome-wide DNA methylation landscape, differential biomarkers were selected. A circulating tumor DNA methylation-based model for identifying lymph node metastasis was constructed with a machine learning algorithm. Its performance was compared with that of traditional methods. A nomogram was constructed by incorporating the circulating tumor DNA methylation-based model and clinicopathological predictors to identify D3 metastasis. In addition, a traditional clinicopathological method was constructed with the same method but without the circulating tumor DNA methylation-based model for identifying D3 metastasis. A comparison of the performance of the 2 models was performed. A single cancer center in China. A total of 206 patients with stage I to III colorectal cancer were recruited between June 2022 and September 2023. All patients underwent radical surgical resection and D3 lymphadenectomy without neoadjuvant treatment. The performance of identifying lymph node metastasis and D3 metastasis. After selecting 27 differential biomarkers, a circulating tumor DNA methylation-based model for identifying lymph node metastasis was constructed, yielding a sensitivity of 82.6% and a specificity of 73.3%. The accuracy was superior to that of CT (77.2% vs 66.5%, p = 0.019). Afterward, a nomogram was constructed by incorporating the circulating tumor DNA methylation-based model and clinicopathological predictors to predict D3 metastasis, which had an accuracy that was also superior to that of the traditional method (82.6% vs 67.4%, p < 0.001). This study included a small number of patients. The proposed novel approach based on circulating tumor DNA methylation could accurately identify lymph node metastasis and D3 metastasis in colorectal cancer preoperatively and inform tailored treatment. See Video Abstract . NCT05558436. ANTECEDENTES:La met&#xe1;stasis en los ganglios linf&#xe1;ticos es importante para el tratamiento y los procedimientos quir&#xfa;rgicos de los pacientes con c&#xe1;ncer colorrectal. La identificaci&#xf3;n preoperatoria de la met&#xe1;stasis D3 podr&#xed;a ayudar a evaluar la necesidad de una linfadenectom&#xed;a D3. No se ha desarrollado ning&#xfa;n m&#xe9;todo no invasivo adecuado para detectar el estado de los ganglios linf&#xe1;ticos.OBJETIVO:Establecer un m&#xe9;todo basado en la metilaci&#xf3;n del ADN libre circulante (ctDNA) para identificar preoperatoriamente la met&#xe1;stasis en los ganglios linf&#xe1;ticos y la met&#xe1;stasis D3 en el c&#xe1;ncer colorrectal.DISE&#xd1;O:Se trata de un estudio diagn&#xf3;stico prospectivo y emparejado. Tras un an&#xe1;lisis del panorama de la metilaci&#xf3;n del ADN en todo el genoma, se seleccionaron biomarcadores diferenciales. Se construy&#xf3; un modelo basado en la metilaci&#xf3;n del ctDNA para identificar la met&#xe1;stasis en los ganglios linf&#xe1;ticos (cMCL) con un algoritmo de aprendizaje autom&#xe1;tico. Se compar&#xf3; su rendimiento con el de los m&#xe9;todos tradicionales. Se construy&#xf3; un nomograma incorporando el modelo basado en la metilaci&#xf3;n del ADN libre circulante para identificar la met&#xe1;stasis en los ganglios linf&#xe1;ticos y los predictores clinicopatol&#xf3;gicos para identificar la met&#xe1;stasis D3. Adem&#xe1;s, se construy&#xf3; un m&#xe9;todo clinicopatol&#xf3;gico tradicional con el mismo m&#xe9;todo, pero sin el modelo basado en la metilaci&#xf3;n del ADN libre circulante para identificar la met&#xe1;stasis en los ganglios linf&#xe1;ticos. Se realiz&#xf3; una comparaci&#xf3;n entre el rendimiento de los dos modelos.ENTORNO:Un &#xfa;nico centro oncol&#xf3;gico en China.PACIENTES:Se reclut&#xf3; a un total de 206 pacientes con c&#xe1;ncer colorrectal en estadio I-III entre junio de 2022 y septiembre de 2023. Todos los pacientes se sometieron a una resecci&#xf3;n quir&#xfa;rgica radical y a una linfadenectom&#xed;a D3 sin tratamiento neoadyuvante.PRINCIPALES MEDIDAS DE RESULTADO:El rendimiento de la identificaci&#xf3;n de la met&#xe1;stasis en los ganglios linf&#xe1;ticos y la met&#xe1;stasis D3.RESULTADOS:Tras seleccionar 27 biomarcadores diferenciales, se construy&#xf3; el modelo basado en la metilaci&#xf3;n del ADN libre circulante (ctDNA) para identificar la met&#xe1;stasis en los ganglios linf&#xe1;ticos, que arroj&#xf3; una sensibilidad del 82,6 % y una especificidad del 73,3 %. La precisi&#xf3;n fue superior a la de la TC (77,2 % frente a 66,5 %, p = 0,019). Posteriormente, se construy&#xf3; un modelo basado en la metilaci&#xf3;n del ADN libre circulante para identificar la met&#xe1;stasis en los ganglios linf&#xe1;ticos: un nomograma para predecir la met&#xe1;stasis D3. La precisi&#xf3;n tambi&#xe9;n fue superior a la del m&#xe9;todo tradicional (82,6 % frente a 67,4 %, p < 0,001).LIMITACI&#xd3;N:Este estudio incluy&#xf3; un n&#xfa;mero reducido de pacientes.CONCLUSIONES:El nuevo enfoque propuesto basado en la metilaci&#xf3;n del ADN libre circulante podr&#xed;a identificar con precisi&#xf3;n la met&#xe1;stasis en los ganglios linf&#xe1;ticos y la met&#xe1;stasis D3 en el c&#xe1;ncer colorrectal antes de la operaci&#xf3;n y servir de base para un tratamiento personalizado. ( AI-generated translation )N&#xda;MERO DE REGISTRO DEL ENSAYO CL&#xcd;NICO:NCT05558436.

Educational only
This information is for general education and is not medical advice. Always talk to a licensed U.S. clinician about your situation, medications, or treatment decisions.