Validation study of MARCKSL1 as a prognostic factor in lymph node-negative breast cancer patients.
Nina Gran EgelandMarie AustdalBianca van Diermen-HidleEmma RewcastleEinar G GudlaugssonJan P A BaakIvar SkalandEmiel A M JanssenKristin JonsdottirPublished in: PloS one (2019)
Protein expression of Myristoylated alanine-rich C kinase substrate like-1 (MARCKSL1) has been identified as a prognostic factor in lymph-node negative (LN-) breast cancer patients. We aim to validate MARCKSL1 protein expression as a prognostic marker for distant metastasis-free survival (DMFS) in a new cohort of LN- breast cancer patients. MARCKSL1 expression was evaluated in 151 operable T1,2N0M0 LN- breast cancer patients by immunohistochemistry. Median follow-up time was 152 months, range 11-189 months. Results were compared with classical prognosticators (age, tumor diameter, grade, estrogen receptor, and proliferation) using single (Kaplan-Meier) and multivariate (Cox model) survival analysis. Thirteen patients (9%) developed distant metastases. With both single and multiple analysis of all features, MARCKSL1 did not show a significant prognostic value for DMFS (p = 0.498). Of the assessed classical prognosticators, only tumor diameter showed prognostic value (hazard ratio 9.3, 95% confidence interval 2.8-31.0, p <0.001). MARCKSL1 expression could not be confirmed as a prognostic factor in this cohort. Possible reasons include changes in diagnostic and treatment guidelines between the discovery and validation cohorts. Further studies are needed to reveal the potential biological role of this protein in breast cancer.
Keyphrases
- prognostic factors
- lymph node
- free survival
- estrogen receptor
- poor prognosis
- neoadjuvant chemotherapy
- sentinel lymph node
- binding protein
- small molecule
- signaling pathway
- optic nerve
- gene expression
- genome wide
- squamous cell carcinoma
- chronic kidney disease
- end stage renal disease
- newly diagnosed
- long non coding rna
- rectal cancer
- clinical practice
- risk assessment
- early stage
- combination therapy
- locally advanced