diff --git a/pori_python/ipr/content.spec.json b/pori_python/ipr/content.spec.json
index c994ba6..f35b15b 100644
--- a/pori_python/ipr/content.spec.json
+++ b/pori_python/ipr/content.spec.json
@@ -564,6 +564,10 @@
         "hrd": {
             "properties": {
                 "kbCategory": {
+                    "examples": [
+                        "homologous recombination deficiency strong signature",
+                        "homologous recombination deficiency moderate signature"
+                    ],
                     "type": "string"
                 },
                 "score": {
diff --git a/tests/test_ipr/test_annotate.py b/tests/test_ipr/test_annotate.py
index 43de421..79eb54c 100644
--- a/tests/test_ipr/test_annotate.py
+++ b/tests/test_ipr/test_annotate.py
@@ -6,6 +6,7 @@
 from pori_python.ipr.constants import (
     COSMIC_SIGNATURE_VARIANT_TYPE,
     HLA_SIGNATURE_VARIANT_TYPE,
+    HRD_MAPPING,
     MSI_MAPPING,
     TMB_SIGNATURE,
     TMB_SIGNATURE_VARIANT_TYPE,
@@ -13,7 +14,7 @@
 from pori_python.ipr.inputs import preprocess_signature_variants
 from pori_python.types import IprSmallMutationVariant
 
-from .test_ipr import DISEASE_RIDS
+from .test_ipr import DISEASE_RIDS  # dummy RIDs; will always result in matchedCancer == false
 
 EXCLUDE_BCGSC_TESTS = os.environ.get('EXCLUDE_BCGSC_TESTS') == '1'
 
@@ -203,6 +204,29 @@ def test_annotate_signature_variants_msi(self, graphkb_conn):
         )
         assert len(msi) != 0
 
+    def test_annotate_signature_variants_hrd_strong(self, graphkb_conn):
+        """Test HRD strong signature"""
+        hrd = annotate_signature_variants(
+            graphkb_conn,
+            DISEASE_RIDS,
+            preprocess_signature_variants(
+                [HRD_MAPPING['homologous recombination deficiency strong signature']]
+            ),
+        )
+        assert len(hrd) != 0
+
+    @pytest.mark.skip(reason='no GKB statement for HRD moderate Signature CVs yet')
+    def test_annotate_signature_variants_hrd_moderate(self, graphkb_conn):
+        """Test HRD moderate signature"""
+        hrd = annotate_signature_variants(
+            graphkb_conn,
+            DISEASE_RIDS,
+            preprocess_signature_variants(
+                [HRD_MAPPING['homologous recombination deficiency moderate signature']]
+            ),
+        )
+        assert len(hrd) != 0
+
     def test_annotate_structural_variants_tp53(self, graphkb_conn):
         """Verify alternate TP53 variants match."""
         ref_key = 'prot_only'