diff --git a/SNPArray/CytoSNP-850Kv1-4_iScan_B1.bed b/SNPArray/CytoSNP-850Kv1-4_iScan_B1.bed
new file mode 100644
index 0000000..12b981b
--- /dev/null
+++ b/SNPArray/CytoSNP-850Kv1-4_iScan_B1.bed
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:154dd9375d39c319e0d33b9796849260107ba41c52f0416503213e6acc2b0655
+size 29029218
diff --git a/SNPArray/CytoSNP-850Kv1-4_iScan_B1.interval_list b/SNPArray/CytoSNP-850Kv1-4_iScan_B1.interval_list
new file mode 100644
index 0000000..eec28d4
--- /dev/null
+++ b/SNPArray/CytoSNP-850Kv1-4_iScan_B1.interval_list
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:565a9acfa768e44491f8fcd5ea04e87fc0cafbf0b65b03418a5e0ae85830823b
+size 28185153
diff --git a/SNPArray/README.md b/SNPArray/README.md
index 2fc4a64..1c041d8 100644
--- a/SNPArray/README.md
+++ b/SNPArray/README.md
@@ -5,5 +5,6 @@ Requirements:  dictionary from reference genome (same hg version), i.e. Homo_sap
 ```
 cat {inputfile.bed} | grep -v track | awk '{OFS="\t" ;print $1,$2+1,$3,"+",$4}' |cat {reference genome dictionary} - > {outputfile.interval_list}
 ```
+Note: in case of chr1 vs 1 issues include "| sed 's/^chr//g'"
 
 Note: (manually) remove chromosome(s) in the header if not used in the original BED file