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-rw-r--r--wqflask/wqflask/marker_regression/gemma_mapping.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/wqflask/wqflask/marker_regression/gemma_mapping.py b/wqflask/wqflask/marker_regression/gemma_mapping.py
index 4e3c203d..895d4ac6 100644
--- a/wqflask/wqflask/marker_regression/gemma_mapping.py
+++ b/wqflask/wqflask/marker_regression/gemma_mapping.py
@@ -221,7 +221,11 @@ def parse_loco_output(this_dataset, gwa_output_filename):
     marker_obs = []
     previous_chr = 0
 
+    no_results = False
     for this_file in output_filelist:
+        if not os.path.isfile(this_file):
+            no_results = True
+            break
         with open(this_file) as output_file:
             for line in output_file:
                 if line.startswith("chr\t"):