diff --git a/CHANGELOG.md b/CHANGELOG.md
index 657bf3ff..f4a2272d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - Avoid MySQLdb.OperationalError `Server has gone away` by modifying by setting `pool_pre_ping=True` when creating the engine
 - Coverage report screenshot displayed on README page and on the documenattion to reflect true statistics from the demo samples
 - Coverage report/overview page crashing when transcripts or exons intervals are required only genes are loaded
+- Coverage overview over a gene should return transcript statistics if D4 file contains WGS data
 
 ## [1.5]
 ### Added
diff --git a/src/chanjo2/models/pydantic_models.py b/src/chanjo2/models/pydantic_models.py
index d3192864..76a41da2 100644
--- a/src/chanjo2/models/pydantic_models.py
+++ b/src/chanjo2/models/pydantic_models.py
@@ -272,6 +272,13 @@ def coverage_thresholds_validator(cls, completeness_thresholds: str):
         thresholds: List[str] = completeness_thresholds.split(",")
         return [int(threshold.strip()) for threshold in thresholds]
 
+    @field_validator("interval_type", mode="before")
+    def interval_type_validator(cls, interval_type: IntervalType) -> IntervalType:
+        """Make sure that gene stats include transcript data even if it's a WGS analysis."""
+        if interval_type == IntervalType.GENES:
+            return IntervalType.TRANSCRIPTS
+        return interval_type
+
 
 class SampleSexRow(BaseModel):
     sample: str