diff --git a/lineage_notes.txt b/lineage_notes.txt
index 8553e0fd..d9d70ca8 100644
--- a/lineage_notes.txt
+++ b/lineage_notes.txt
@@ -2662,3 +2662,4 @@ XBN	Recombinant lineage of BA.2.75 and XBB.3, mainly found in USA, from pango-de
 *I.1	Withdrawn: Alias of B.1.1.217.1, Latvian lineage, split from B.1.1.25
 *J.1	Withdrawn: Alias of B.1.1.250.1, Australian lineage
 *BQ.1.1.33	Withdrawn: Alias of B.1.1.529.5.3.1.1.1.1.1.1.33, US lineage, child of BQ.1.1.3
+BA.5.2.50	Alias of B.1.1.529.5.2.50 found mainly in China, from pango-designation issue #1542
diff --git a/lineages.csv b/lineages.csv
index 0c85b481..972e5f97 100644
--- a/lineages.csv
+++ b/lineages.csv
@@ -2135001,3 +2135001,7 @@ Germany/TH-RKI-I-1057741/2022,BA.5.1.32
 Belgium/ZNA_25744711/2022,BA.5.1.32
 France/CVL-HMN-22102070367/2022,BA.5.1.32
 Germany/BW-RKI-I-993168/2022,BA.5.1.32
+Gansu/GSCDC-012/2022,BA.5.2.50
+Japan/IC-15412/2023,BA.5.2.50
+Hunan/HuNCDC-1921/2022,BA.5.2.50
+Gansu/GSCDC-020/2022,BA.5.2.50