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Tumor Discovery                                                       LCP2 regulates melanoma progression



















































            Figure 2. Univariate survival analysis for DEGs in TCGA data set.
            DEGs: Differentially expressed genes; TCGA: The Cancer Genome Atlas.

            1.785 – 3.076, Figure 4A), with the median survival time of   3.4. Associations between identified prognostic
            1628 and 4601 days, respectively. Meanwhile, our results   genes and TAL subsets
            showed that the DFS of high-risk group was significantly   The associations between the selected ten prognostic genes
            worse than that of low-risk group (log-rank P = 8e-07, HR:
            2.895, 95% CI: 1.867 – 4.489, Figure 4B), with the median   and the specific TAL were calculated using Spearman’s rank
            survival time of 2195 and 6299  days, respectively. To   correlation. Genes that had the largest absolute correlation
            explore the robustness of ten-gene signature for predicting   coefficients with certain TAL subset among all TAL
            the survival of melanoma, we externally validated the   subsets were considered to have strong association with
            prognostic ability of ten-gene signature in an independent   that TAL subset. Results showed that LCP2, ISG20, and
            GSE65904 data set. Results showed that the OS of high-risk   CLEC4E expression were significantly positively correlated
                                                                       +
            patients in GSE65904 was significantly worse than that of   with CD8  T-cells. CD81 and MGRN1 expression were
            low-risk patients (log-rank P = 0.0036, HR: 1.786, 95% CI:   significantly positively correlated with Treg cells, while
            1.202 – 2.653 days, Figure 4C), with the median survival   BLNK and IL-18 expression were significantly negatively
            time of 629 and 1404, respectively. In addition, patients in   correlated with M0 macrophages. In addition, RAB5C and
            high-risk group had significantly worse DMFS than those   TRIM32 expression had strong association with B-cells
            in low-risk group (log-rank P = 0.0082, HR: 1.786, 95% CI:   and natural killer cells, respectively (Figure 5). Given the
            1.155 – 2.762, Figure 4D), with the median survival time of   important role of LCP2 in the immune system, we focused
            379 and 1401 days, respectively.                   our efforts on investigating LCP2 in the subsequent studies.


            Volume 2 Issue 1 (2023)                         6                           https://doi.org/10.36922/td.308
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