Objectives: To investigate the relationship of dual-phase dual-energy CT (DE-CT) and tumour size in the evaluation of the response to anti-EGFR therapy in patients with advanced non-small cell lung cancer (NSCLC).
Methods: Dual-phase DE-CT was performed in 31 patients with NSCLC before the onset of anti-EGFR (erlotinib) therapy and as follow-up (mean 8 weeks). Iodine uptake (IU; mg/mL) was quantified using prototype software in arterial and venous phases; arterial enhancement fraction (AEF) was calculated. The change of IU before and after therapy onset was compared with anatomical evaluation in maximal transverse diameter and volume (responders vs. non-responders).
Results: A significant decrease of IU in venous phase was proved in responders according to all anatomical parameters (p=0.002-0.016). In groups of non-responders, a significant change of IU was not proved with variable trends of development. The most significant change was observed using the anatomical parameter of volume (cut-off 73 %). A significant difference of percentage change in AEF was proved between responding and non-responders (p=0.019-0.043).
Conclusion: Dual-phase DE-CT with iodine uptake quantification is a feasible method with potential benefit in advanced assessment of anti-EGFR therapy response. We demonstrated a decrease in vascularization in the responding primary tumours and non-significant variable development of vascularization in non-responding tumours.
Key Points: • Dual-phase DE-CT is feasible for vascularization assessment of NSCLC with anti-EGFR therapy. • There was a significant decrease of iodine uptake in responding tumours. • There was a non-significant and variable development in non-responding tumours. • There was significant difference of AEF percentage change between responders and non-responders.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s00330-015-4092-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
"Evaluating Current Diagnostic and Treatment Challenges in Colorectal Cancer: Strategies for improving care and outcomes in Georgia".
Cancer Treat Res Commun
January 2025
Caucasus Medical Centre, Tbilisi, Georgia; Ilia State University- School of Medicine. Tbilisi, Georgia. Electronic address:
Purpose: An initial analysis of population-based cancer survival data from Georgia revealed lower CRC survival rates compared to high-income countries. We conducted the study to address this issue and propose strategies for enhancing CRC care.
Patients And Methods: We analyzed CRC statistics, reviewed screening programs, and examined published CRC research in Georgia.
Integrated multi-omics analyses of oral squamous cell carcinoma reveal precision patient stratification and personalized treatment strategies.
Cancer Lett
January 2025
Molecular Medicine Research Center, Chang Gung University, Taoyuan City 33302, Taiwan; Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan.
Oral cavity squamous cell carcinoma (OSCC), a leading subtype of head and neck cancer, exhibits high global incidence and mortality rates. Despite advancements in surgery and radiochemotherapy, approximately one-third of patients experience relapse. To improve current targeted and immunotherapy strategies for recurrent OSCC, we conducted multi-omics analyses on pretreatment OSCC samples (cohorts 1 and 2, n=137) and identified A3A and EGFR, both at the RNA and protein levels, as inversely expressed markers for patient stratification and response prediction.
View Article and Find Full Text PDFThe efficacy and safety of suvemcitug, envafolimab, and FOLFIRI in microsatellite-stable or mismatch repair-proficient colorectal cancer: preliminary results of a phase 2 study.
Int J Colorectal Dis
January 2025
Internal Medicine, Jilin Cancer Hospital, Changchun, China.
Purpose: This phase II study is designed to evaluate the combination therapy involving suvemcitug and envafolimab with FOLFIRI in microsatellite-stable or mismatch repair-proficient (MSS/pMMR) colorectal cancer (CRC) in the second-line treatment setting.
Methods: This study is a non-randomized, open-label prospective study comprising multiple cohorts (NCT05148195). Here, we only report the data from the CRC cohort.
Evaluation of SNaPshot and Sanger sequencing for the detection of and mutations in a sample of Venezuelan patients with colorectal cancer.
Ecancermedicalscience
November 2024
Instituto Venezolano de Investigaciones Científicas (IVIC), Unidad de Estudios Genéticos y Forenses (UEGF), Caracas 1020, República Bolivariana de Venezuela.
Colorectal cancer (CRC) is the third most commonly occurring cancer in men and the second most commonly occurring cancer in women. The epidermal growth factor receptor (EGFR) is relevant in the development and progression of CRC, because it is part of multiple signaling pathways involved in processes of the cell cycle, their malfunction causes dysregulation and subsequently carcinogenesis. Consequently, therapies were developed with anti-EGFR monoclonal antibodies (MAbs) that improve the survival of patients with CRC.
View Article and Find Full Text PDFDurable Remission After Targeted Therapy in Mutant Metastatic Colorectal Cancer: Case Report.
J Immunother Precis Oncol
February 2025
Department of Investigational Therapeutics, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
BRAF mutation leads to constitutive activation of the MAPK pathway and is associated with the immune-activating molecular subtype of colorectal cancer. Targeted therapy for mutant metastatic colorectal cancer (CRC) has significantly improved outcomes for these patients when combined with anti-epithelial growth factor receptor (EGFR) therapy. However, most patients ultimately develop disease progression.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!