diff --git a/10.gene-expression-signatures/README.md b/10.gene-expression-signatures/README.md
index dd56e8659..c86175c43 100644
--- a/10.gene-expression-signatures/README.md
+++ b/10.gene-expression-signatures/README.md
@@ -2,7 +2,8 @@
 
 **Gregory Way 2019**
 
-In this module we perform a series of t-tests to detect sample sex in GTEx samples and TCGA patients as well as MYCN amplification status in neuroblastoma (NBL) tumors using TARGET data.
+In this module we perform a series of t-tests to detect sample sex in GTEx samples and TCGA patients based on gene expression profiles.
+We also test for signatures representing MYCN amplification status in neuroblastoma (NBL) tumors using TARGET data.
 
 ![signatures](https://raw.githubusercontent.com/greenelab/BioBombe/master/10.detect-separation/figures/full_separation_plot.png)