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Identifying biomarkers associated with tumor growth rate: a longitudinal preoperative magnetic resonance imaging follow-up of low-grade gliomas. | LitMetric

AI Article Synopsis

  • This study explored the relationship between molecular biomarkers and the growth rates of low-grade gliomas (LGGs), specifically WHO grade II gliomas.
  • Researchers analyzed preoperative MRI data from 56 patients and found that various biomarkers significantly influenced tumor growth, with mutant p53 increasing growth rates and ATRX reducing them.
  • The presence of O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation was linked to slower tumor growth, highlighting the importance of biomarker status in understanding tumor behavior in LGGs.

Article Abstract

Background: Although the influence of molecular biomarkers on the biological behavior of tumor cells has been investigated, their quantitative influence on the velocity of tumor growth remains unclear. This study aimed to identify the molecular biomarkers associated with tumor growth rates in World Health Organization (WHO) grade II gliomas, or low-grade gliomas (LGGs).

Methods: Preoperative magnetic resonance imaging (MRI) data of patients with LGGs were retrospectively reviewed. Patients with at least 2 preoperative MRIs taken more than 90 days apart were enrolled. Patients with isocitrate dehydrogenase () wild-type tumors or with no recorded status were excluded. A linear mixed-effects model was used to assess the velocity of tumor diameter expansion. The effect of biomarker expression on tumor growth rate was assessed using a multivariate linear mixed-effects regression model.

Results: Data from 56 patients were used in our study. The overall velocity of diameter expansion (VDE) for LGGs was 2.1 mm/year. Higher expression level of mutant p53 were significantly associated with a higher tumor growth rate (+1.9 mm/year, P<0.01), while higher expression level of alpha-thalassemia/mental retardation syndrome X-linked protein (ATRX) were significantly associated with a lower tumor growth rate (-1.3 mm/year, P<0.01). Tumors with O6-methylguanine-DNA methyltransferase () promoter methylation were found to grow significantly more slowly than those with no methylation (-3.1 mm/year, P<0.01). The telomerase reverse transcriptase () promoter type and expressions levels of Ki-67 and epidermal growth factor receptor (EGFR) showed no significant independent impact on tumor growth rates.

Conclusions: The status of biomarkers is significantly associated with the tumor growth rate in LGGs.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9263789PMC
http://dx.doi.org/10.21037/atm-21-3998DOI Listing

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