diff --git a/gx_suite_definitions/gene_info.ipynb b/gx_suite_definitions/gene_info.ipynb
index e043478..1f0ece5 100644
--- a/gx_suite_definitions/gene_info.ipynb
+++ b/gx_suite_definitions/gene_info.ipynb
@@ -245,11 +245,11 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# # druggability\n",
-    "# validator.expect_column_values_to_be_of_type(\"druggability\", \"str\")\n",
-    "# with open(\"../src/agoradatatools/great_expectations/gx/json_schemas/gene_info/druggability.json\", \"r\") as file:\n",
-    "#     druggability_schema = json.load(file)\n",
-    "# validator.expect_column_values_to_match_json_schema(\"druggability\", json_schema=druggability_schema)"
+    "# druggability\n",
+    "validator.expect_column_values_to_be_of_type(\"druggability\", \"str\")\n",
+    "with open(\"../src/agoradatatools/great_expectations/gx/json_schemas/gene_info/druggability.json\", \"r\") as file:\n",
+    "    druggability_schema = json.load(file)\n",
+    "validator.expect_column_values_to_match_json_schema(\"druggability\", json_schema=druggability_schema, mostly=0.50)"
    ]
   },
   {
diff --git a/src/agoradatatools/great_expectations/gx/expectations/gene_info.json b/src/agoradatatools/great_expectations/gx/expectations/gene_info.json
index 794c094..231acf9 100644
--- a/src/agoradatatools/great_expectations/gx/expectations/gene_info.json
+++ b/src/agoradatatools/great_expectations/gx/expectations/gene_info.json
@@ -415,6 +415,56 @@
       },
       "meta": {}
     },
+    {
+      "expectation_type": "expect_column_values_to_be_of_type",
+      "kwargs": {
+        "column": "druggability",
+        "type_": "str"
+      },
+      "meta": {}
+    },
+    {
+      "expectation_type": "expect_column_values_to_match_json_schema",
+      "kwargs": {
+        "column": "druggability",
+        "json_schema": {
+          "$id": "http://example.com/example.json",
+          "$schema": "https://json-schema.org/draft/2019-09/schema",
+          "default": null,
+          "examples": [
+            {
+              "pharos_class": [
+                "Tchem"
+              ]
+            }
+          ],
+          "properties": {
+            "pharos_class": {
+              "default": [],
+              "examples": [
+                [
+                  "Tchem"
+                ]
+              ],
+              "items": {
+                "default": "",
+                "examples": [
+                  "Tchem"
+                ],
+                "title": "Pharos object",
+                "type": "string"
+              },
+              "title": "The pharos_class Schema",
+              "type": "array"
+            }
+          },
+          "title": "Root Schema",
+          "type": "object"
+        },
+        "mostly": 0.5
+      },
+      "meta": {}
+    },
     {
       "expectation_type": "expect_column_values_to_be_of_type",
       "kwargs": {
@@ -453,25 +503,25 @@
       "kwargs": {
         "column": "biodomains",
         "list_members": [
-          "Cell Cycle",
+          "Oxidative Stress",
+          "Synapse",
+          "Metal Binding and Homeostasis",
           "Autophagy",
-          "Mitochondrial Metabolism",
-          "Proteostasis",
+          "RNA Spliceosome",
           "APP Metabolism",
+          "Apoptosis",
           "Endolysosome",
           "Vasculature",
-          "Tau Homeostasis",
-          "RNA Spliceosome",
-          "Apoptosis",
+          "DNA Repair",
+          "Immune Response",
           "Lipid Metabolism",
+          "Tau Homeostasis",
           "Myelination",
-          "Metal Binding and Homeostasis",
-          "Synapse",
           "Epigenetic",
-          "Immune Response",
-          "Oxidative Stress",
+          "Mitochondrial Metabolism",
+          "Proteostasis",
           "Structural Stabilization",
-          "DNA Repair"
+          "Cell Cycle"
         ]
       },
       "meta": {}
diff --git a/src/agoradatatools/great_expectations/gx/json_schemas/gene_info/druggability.json b/src/agoradatatools/great_expectations/gx/json_schemas/gene_info/druggability.json
index e5e1be2..894f884 100644
--- a/src/agoradatatools/great_expectations/gx/json_schemas/gene_info/druggability.json
+++ b/src/agoradatatools/great_expectations/gx/json_schemas/gene_info/druggability.json
@@ -2,11 +2,8 @@
     "$schema": "https://json-schema.org/draft/2019-09/schema",
     "$id": "http://example.com/example.json",
     "type": "object",
-    "default": {},
+    "default": null,
     "title": "Root Schema",
-    "required": [
-        "pharos_class"
-    ],
     "properties": {
         "pharos_class": {
             "type": "array",
@@ -15,7 +12,7 @@
             "items": {
                 "type": "string",
                 "default": "",
-                "title": "A Schema",
+                "title": "Pharos object",
                 "examples": [
                     "Tchem"
                 ]