diff --git a/src/main/java/org/cbioportal/service/impl/ViolinPlotServiceImpl.java b/src/main/java/org/cbioportal/service/impl/ViolinPlotServiceImpl.java
index fc90318d280..696bb46a51b 100644
--- a/src/main/java/org/cbioportal/service/impl/ViolinPlotServiceImpl.java
+++ b/src/main/java/org/cbioportal/service/impl/ViolinPlotServiceImpl.java
@@ -174,9 +174,9 @@ public ClinicalViolinPlotData getClinicalViolinPlotData(
                     Double value = useLogScale ? ViolinPlotServiceImpl.logScale(Double.parseDouble(d.getAttrValue())) : Double.parseDouble(d.getAttrValue());
                     gaussians.add(new Gaussian(value, sigma));
                 }
-
+                
                 row.setCurveData(
-                    curvePoints.stream().map(p -> {
+                    curvePoints.parallelStream().map(p -> {
                         BigDecimal sum = new BigDecimal(0);
                         for (Gaussian g : gaussians) {
                             sum = sum.add(BigDecimal.valueOf(g.value(p)));
diff --git a/src/main/java/org/cbioportal/web/columnar/StudyViewColumnStoreController.java b/src/main/java/org/cbioportal/web/columnar/StudyViewColumnStoreController.java
index ccb193cb9af..6393b061164 100644
--- a/src/main/java/org/cbioportal/web/columnar/StudyViewColumnStoreController.java
+++ b/src/main/java/org/cbioportal/web/columnar/StudyViewColumnStoreController.java
@@ -13,12 +13,14 @@
 import org.cbioportal.model.ClinicalData;
 import org.cbioportal.model.ClinicalDataBin;
 import org.cbioportal.model.ClinicalDataCountItem;
-import org.cbioportal.model.CopyNumberCountByGene;
+import org.cbioportal.model.ClinicalViolinPlotData;
 import org.cbioportal.model.DensityPlotData;
+import org.cbioportal.model.CopyNumberCountByGene;
 import org.cbioportal.model.GenomicDataCount;
 import org.cbioportal.model.Sample;
 import org.cbioportal.service.ClinicalDataDensityPlotService;
 import org.cbioportal.service.StudyViewColumnarService;
+import org.cbioportal.service.ViolinPlotService;
 import org.cbioportal.service.exception.StudyNotFoundException;
 import org.cbioportal.web.columnar.util.NewStudyViewFilterUtil;
 import org.cbioportal.web.config.annotation.InternalApi;
@@ -58,15 +60,18 @@ public class StudyViewColumnStoreController {
     private final StudyViewColumnarService studyViewColumnarService;
     private final ClinicalDataBinner clinicalDataBinner;
     private final ClinicalDataDensityPlotService clinicalDataDensityPlotService;
-    
+    private final ViolinPlotService violinPlotService;
+
     @Autowired
     public StudyViewColumnStoreController(StudyViewColumnarService studyViewColumnarService, 
                                           ClinicalDataBinner clinicalDataBinner,
-                                          ClinicalDataDensityPlotService clinicalDataDensityPlotService
+                                          ClinicalDataDensityPlotService clinicalDataDensityPlotService,
+                                          ViolinPlotService violinPlotService
                                           ) {
         this.studyViewColumnarService = studyViewColumnarService;
         this.clinicalDataBinner = clinicalDataBinner;
         this.clinicalDataDensityPlotService = clinicalDataDensityPlotService;
+        this.violinPlotService = violinPlotService;
     }
     
 
@@ -205,8 +210,8 @@ public ResponseEntity<List<ClinicalDataBin>> fetchClinicalDataBinCounts(
     }
 
     @PreAuthorize("hasPermission(#involvedCancerStudies, 'Collection<CancerStudyId>', T(org.cbioportal.utils.security.AccessLevel).READ)")
-    @RequestMapping(value = "/column-store/clinical-data-density-plot/fetch", method = RequestMethod.POST,
-        consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
+    @PostMapping(value = "/column-store/clinical-data-density-plot/fetch", consumes = MediaType.APPLICATION_JSON_VALUE, 
+        produces = MediaType.APPLICATION_JSON_VALUE)
     @Operation(description = "Fetch clinical data density plot bins by study view filter")
     @ApiResponse(responseCode = "200", description = "OK",
         content = @Content(schema = @Schema(implementation = DensityPlotData.class)))
@@ -260,4 +265,64 @@ public ResponseEntity<DensityPlotData> fetchClinicalDataDensityPlot(
 
         return new ResponseEntity<>(result, HttpStatus.OK);
     }
+
+    @PreAuthorize("hasPermission(#involvedCancerStudies, 'Collection<CancerStudyId>', T(org.cbioportal.utils.security.AccessLevel).READ)")
+    @PostMapping(value = "/column-store/clinical-data-violin-plots/fetch",
+        consumes = MediaType.APPLICATION_JSON_VALUE, produces = MediaType.APPLICATION_JSON_VALUE)
+    @Operation(description = "Fetch violin plot curves per categorical clinical data value, filtered by study view filter")
+    @ApiResponse(responseCode = "200", description = "OK",
+        content = @Content(schema = @Schema(implementation = ClinicalViolinPlotData.class)))
+    public ResponseEntity<ClinicalViolinPlotData> fetchClinicalDataViolinPlots(
+        @Parameter(required = true, description = "Clinical Attribute ID of the categorical attribute")
+        @RequestParam String categoricalAttributeId,
+        @Parameter(required = true, description = "Clinical Attribute ID of the numerical attribute")
+        @RequestParam String numericalAttributeId,
+        @Parameter(description = "Starting point of the violin plot axis, if different than smallest value")
+        @RequestParam(required = false) BigDecimal axisStart,
+        @Parameter(description = "Ending point  of the violin plot axis, if different than largest value")
+        @RequestParam(required = false) BigDecimal axisEnd,
+        @Parameter(description = "Number of points in the curve")
+        @RequestParam(required = false, defaultValue = "100") BigDecimal numCurvePoints,
+        @Parameter(description="Use log scale for the numerical attribute")
+        @RequestParam(required = false, defaultValue = "false") Boolean logScale,
+        @Parameter(description="Sigma stepsize multiplier")
+        @RequestParam(required = false, defaultValue = "1") BigDecimal sigmaMultiplier,
+        @Parameter(hidden = true) // prevent reference to this attribute in the swagger-ui interface
+        @RequestAttribute(required = false, value = "involvedCancerStudies") Collection<String> involvedCancerStudies,
+        @Parameter(hidden = true) // prevent reference to this attribute in the swagger-ui interface. this attribute is needed for the @PreAuthorize tag above.
+        @Valid @RequestAttribute(required = false, value = "interceptedStudyViewFilter") StudyViewFilter interceptedStudyViewFilter,
+        @Parameter(required = true, description = "Study view filter")
+        @Valid @RequestBody(required = false) StudyViewFilter studyViewFilter) {
+        
+        List<Sample> filteredSamples = studyViewColumnarService.getFilteredSamples(interceptedStudyViewFilter);
+        
+        // get samples that are filtered without the numerical filter - this is violin plot data
+        if (interceptedStudyViewFilter.getClinicalDataFilters() != null) {
+            interceptedStudyViewFilter.getClinicalDataFilters().stream()
+                .filter(f->f.getAttributeId().equals(numericalAttributeId))
+                .findAny()
+                .ifPresent(f->interceptedStudyViewFilter.getClinicalDataFilters().remove(f));
+        }
+
+        // Filter out clinical data with empty attribute values due to Clickhouse migration
+        List<ClinicalData> sampleClinicalDataList = studyViewColumnarService.getSampleClinicalData(interceptedStudyViewFilter, List.of(numericalAttributeId, categoricalAttributeId))
+            .stream()
+            .filter(clinicalData -> !clinicalData.getAttrValue().isEmpty())
+            .toList();
+        
+        // Only mutation count can use log scale
+        boolean useLogScale = logScale && numericalAttributeId.equals("MUTATION_COUNT");
+        
+        ClinicalViolinPlotData result = violinPlotService.getClinicalViolinPlotData(
+            sampleClinicalDataList,
+            filteredSamples,
+            axisStart,
+            axisEnd,
+            numCurvePoints,
+            useLogScale,
+            sigmaMultiplier
+        );
+
+        return new ResponseEntity<>(result, HttpStatus.OK);
+    }
 }
diff --git a/src/main/resources/org/cbioportal/persistence/mybatisclickhouse/StudyViewMapper.xml b/src/main/resources/org/cbioportal/persistence/mybatisclickhouse/StudyViewMapper.xml
index 78926fff053..97854b43b90 100644
--- a/src/main/resources/org/cbioportal/persistence/mybatisclickhouse/StudyViewMapper.xml
+++ b/src/main/resources/org/cbioportal/persistence/mybatisclickhouse/StudyViewMapper.xml
@@ -84,6 +84,7 @@
             cancer_study_identifier as studyId
         FROM clinical_data_derived
         <where>
+            type = 'sample' AND
             sample_unique_id IN (
             <include refid="sampleUniqueIdsFromStudyViewFilter"/>
             <if test="applyPatientIdFilters == true">