diff --git a/src/mavedb/lib/score_sets.py b/src/mavedb/lib/score_sets.py
index 142623dd..cedccef3 100644
--- a/src/mavedb/lib/score_sets.py
+++ b/src/mavedb/lib/score_sets.py
@@ -216,12 +216,12 @@ def build_search_score_sets_query_filter(
             )
         )
 
-    if search.keywords:
+    if search.controlled_keywords:
         query = query.filter(
             ScoreSet.experiment.has(
                 Experiment.keyword_objs.any(
                     ExperimentControlledKeywordAssociation.controlled_keyword.has(
-                        ControlledKeyword.label.in_(search.keywords)
+                        ControlledKeyword.label.in_(search.controlled_keywords)
                     )
                 )
             )
@@ -334,6 +334,9 @@ def fetch_score_set_search_filter_options(
     publication_author_name_counter: Counter[str] = Counter()
     publication_db_name_counter: Counter[str] = Counter()
     publication_journal_counter: Counter[str] = Counter()
+    # Controlled keywords related counters
+    controlled_keywords_label_counter: Counter[str] = Counter()
+
 
     # --- PERFORMANCE NOTE ---
     # The following counter construction loop is a bottleneck for large score set queries.
@@ -388,6 +391,13 @@ def fetch_score_set_search_filter_options(
             if journal:
                 publication_journal_counter[journal] += 1
 
+        # Controlled keywords related options
+        for controlled_keyword in getattr(score_set.experiment, "keyword_objs", []):
+            keyword = getattr(controlled_keyword, "controlled_keyword", [])
+            label = getattr(keyword, "label", None)
+            if label:
+                controlled_keywords_label_counter[label] += 1
+
     logger.debug(msg="Score set search filter options were fetched.", extra=logging_context())
 
     return {
@@ -398,6 +408,7 @@ def fetch_score_set_search_filter_options(
         "publication_author_names": score_set_search_filter_options_from_counter(publication_author_name_counter),
         "publication_db_names": score_set_search_filter_options_from_counter(publication_db_name_counter),
         "publication_journals": score_set_search_filter_options_from_counter(publication_journal_counter),
+        "controlled_keywords": score_set_search_filter_options_from_counter(controlled_keywords_label_counter),
     }
 
 
diff --git a/src/mavedb/view_models/search.py b/src/mavedb/view_models/search.py
index 712cb5e3..09e7ff00 100644
--- a/src/mavedb/view_models/search.py
+++ b/src/mavedb/view_models/search.py
@@ -25,7 +25,7 @@ class ScoreSetsSearch(BaseModel):
     databases: Optional[list[str]] = None
     journals: Optional[list[str]] = None
     publication_identifiers: Optional[list[str]] = None
-    keywords: Optional[list[str]] = None
+    controlled_keywords: Optional[list[str]] = None
     text: Optional[str] = None
     include_experiment_score_set_urns_and_count: Optional[bool] = True
     offset: Optional[int] = None
@@ -56,6 +56,7 @@ class ScoreSetsSearchFilterOptionsResponse(BaseModel):
     publication_author_names: list[ScoreSetsSearchFilterOption]
     publication_db_names: list[ScoreSetsSearchFilterOption]
     publication_journals: list[ScoreSetsSearchFilterOption]
+    controlled_keywords: list[ScoreSetsSearchFilterOption]
 
     class Config:
         from_attributes = True
diff --git a/tests/helpers/constants.py b/tests/helpers/constants.py
index e06d07a1..b39691a3 100644
--- a/tests/helpers/constants.py
+++ b/tests/helpers/constants.py
@@ -2184,7 +2184,7 @@
     "databases": ["uniprot"],
     "journals": ["biomed"],
     "publication_identifiers": ["12345678"],
-    "keywords": ["keyword"],
+    "controlled_keywords": ["keyword"],
     "text": "testtesttest",
 }
 
diff --git a/tests/lib/test_score_set.py b/tests/lib/test_score_set.py
index 0b7852da..f74ae57b 100644
--- a/tests/lib/test_score_set.py
+++ b/tests/lib/test_score_set.py
@@ -391,6 +391,7 @@ def test_fetch_score_set_search_filter_options_no_score_sets(setup_lib_db, sessi
     filter_options = fetch_score_set_search_filter_options(session, None, None, score_set_search)
 
     assert filter_options == {
+        "controlled_keywords": [],
         "target_gene_categories": [],
         "target_gene_names": [],
         "target_organism_names": [],
@@ -437,6 +438,7 @@ def test_fetch_score_set_search_filter_options_with_score_set(setup_lib_db, sess
     filter_options = fetch_score_set_search_filter_options(session, user_data, None, score_set_search)
 
     assert filter_options == {
+        "controlled_keywords": [],
         "target_gene_categories": [{"value": TargetCategory.protein_coding, "count": 1}],
         "target_gene_names": [{"value": "TEST2", "count": 1}],
         "target_organism_names": [],
@@ -511,6 +513,7 @@ def test_fetch_score_set_search_filter_options_with_partial_filtered_score_sets(
     user_data = UserData(user=requesting_user, active_roles=[])
     filter_options = fetch_score_set_search_filter_options(session, user_data, None, score_set_search)
     assert filter_options == {
+        "controlled_keywords": [],
         "target_gene_categories": [{"value": TargetCategory.protein_coding, "count": 1}],
         "target_gene_names": [{"value": "TEST1", "count": 1}],
         "target_organism_names": [{"count": 1, "value": "Organism name"}],
@@ -528,6 +531,7 @@ def test_fetch_score_set_search_filter_options_with_no_matching_score_sets(setup
     filter_options = fetch_score_set_search_filter_options(session, user_data, None, score_set_search)
 
     assert filter_options == {
+        "controlled_keywords": [],
         "target_gene_categories": [],
         "target_gene_names": [],
         "target_organism_names": [],
@@ -543,6 +547,7 @@ def test_fetch_score_set_search_filter_options_with_no_permitted_score_sets(setu
     filter_options = fetch_score_set_search_filter_options(session, None, None, score_set_search)
 
     assert filter_options == {
+        "controlled_keywords": [],
         "target_gene_categories": [],
         "target_gene_names": [],
         "target_organism_names": [],