diff --git a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI-docs.json b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI-docs.json
index dc13a5fdfae..e3bc4db4b7b 100644
--- a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI-docs.json
+++ b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI-docs.json
@@ -5418,6 +5418,36 @@
       ],
       "type": "object"
     },
+    "MutationDataFilter": {
+      "properties": {
+        "categorization": {
+          "enum": [
+            "MUTATED",
+            "EVENT"
+          ],
+          "type": "string"
+        },
+        "hugoGeneSymbol": {
+          "type": "string"
+        },
+        "profileType": {
+          "type": "string"
+        },
+        "values": {
+          "items": {
+            "items": {
+              "$ref": "#/definitions/DataFilterValue"
+            },
+            "type": "array"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "categorization"
+      ],
+      "type": "object"
+    },
     "MutationFilter": {
       "description": "List of Sample IDs/Sample List ID and Entrez Gene IDs",
       "properties": {
@@ -5926,6 +5956,12 @@
           },
           "type": "array"
         },
+        "mutationDataFilters": {
+          "items": {
+            "$ref": "#/definitions/MutationDataFilter"
+          },
+          "type": "array"
+        },
         "patientTreatmentFilters": {
           "$ref": "#/definitions/AndedPatientTreatmentFilters"
         },
diff --git a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI.ts b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI.ts
index 9206ee6b534..b9b9a112105 100644
--- a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI.ts
+++ b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPI.ts
@@ -551,6 +551,17 @@ export type Mutation = {
 
         'variantType': string
 
+};
+export type MutationDataFilter = {
+    'categorization': "MUTATED" | "EVENT"
+
+        'hugoGeneSymbol': string
+
+        'profileType': string
+
+        'values': Array < Array < DataFilterValue >
+        >
+
 };
 export type MutationFilter = {
     'entrezGeneIds': Array < number >
@@ -757,6 +768,8 @@ export type StudyViewFilter = {
         'genomicProfiles': Array < Array < string >
         >
 
+        'mutationDataFilters': Array < MutationDataFilter >
+
         'patientTreatmentFilters': AndedPatientTreatmentFilters
 
         'patientTreatmentGroupFilters': AndedPatientTreatmentFilters
diff --git a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal-docs.json b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal-docs.json
index 2f1cf95e502..dc27c974f83 100644
--- a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal-docs.json
+++ b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal-docs.json
@@ -2039,6 +2039,52 @@
         "operationId": "fetchMutationCountsByPositionUsingPOST"
       }
     },
+    "/api/mutation-data-counts/fetch": {
+      "post": {
+        "consumes": [
+          "application/json"
+        ],
+        "produces": [
+          "application/json"
+        ],
+        "parameters": [
+          {
+            "default": "SUMMARY",
+            "description": "Level of detail of the response",
+            "enum": [
+              "ID",
+              "SUMMARY",
+              "DETAILED",
+              "META"
+            ],
+            "in": "query",
+            "name": "projection",
+            "required": false,
+            "type": "string"
+          },
+          {
+            "in": "body",
+            "name": "genomicDataCountFilter",
+            "schema": {
+              "$ref": "#/definitions/GenomicDataCountFilter"
+            }
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK",
+            "schema": {
+              "$ref": "#/definitions/ResponseEntityListGenomicDataCountItem"
+            }
+          }
+        },
+        "tags": [
+          "Study View"
+        ],
+        "description": "Fetch mutation data counts by GenomicDataCountFilter",
+        "operationId": "fetchMutationDataCountsUsingPOST"
+      }
+    },
     "/api/reference-genome-genes/{genomeName}": {
       "get": {
         "produces": [
@@ -3893,6 +3939,53 @@
       },
       "type": "object"
     },
+    "ContentDisposition": {
+      "properties": {
+        "attachment": {
+          "type": "boolean"
+        },
+        "charset": {
+          "properties": {
+            "registered": {
+              "type": "boolean"
+            }
+          },
+          "type": "object"
+        },
+        "creationDate": {
+          "format": "date-time",
+          "type": "string"
+        },
+        "filename": {
+          "type": "string"
+        },
+        "formData": {
+          "type": "boolean"
+        },
+        "inline": {
+          "type": "boolean"
+        },
+        "modificationDate": {
+          "format": "date-time",
+          "type": "string"
+        },
+        "name": {
+          "type": "string"
+        },
+        "readDate": {
+          "format": "date-time",
+          "type": "string"
+        },
+        "size": {
+          "format": "int64",
+          "type": "integer"
+        },
+        "type": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
     "CopyNumberCount": {
       "properties": {
         "alteration": {
@@ -4714,6 +4807,10 @@
         "label": {
           "type": "string"
         },
+        "uniqueCount": {
+          "format": "int32",
+          "type": "integer"
+        },
         "value": {
           "type": "string"
         }
@@ -4908,6 +5005,76 @@
       ],
       "type": "object"
     },
+    "HttpMethod": {
+      "type": "object"
+    },
+    "HttpRange": {
+      "type": "object"
+    },
+    "HttpStatusCode": {
+      "properties": {
+        "error": {
+          "type": "boolean"
+        },
+        "is1xxInformational": {
+          "type": "boolean"
+        },
+        "is2xxSuccessful": {
+          "type": "boolean"
+        },
+        "is3xxRedirection": {
+          "type": "boolean"
+        },
+        "is4xxClientError": {
+          "type": "boolean"
+        },
+        "is5xxServerError": {
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
+    "MediaType": {
+      "properties": {
+        "parameters": {
+          "additionalProperties": {
+            "type": "string"
+          },
+          "type": "object"
+        },
+        "charset": {
+          "properties": {
+            "registered": {
+              "type": "boolean"
+            }
+          },
+          "type": "object"
+        },
+        "concrete": {
+          "type": "boolean"
+        },
+        "qualityValue": {
+          "format": "double",
+          "type": "number"
+        },
+        "subtype": {
+          "type": "string"
+        },
+        "subtypeSuffix": {
+          "type": "string"
+        },
+        "type": {
+          "type": "string"
+        },
+        "wildcardSubtype": {
+          "type": "boolean"
+        },
+        "wildcardType": {
+          "type": "boolean"
+        }
+      },
+      "type": "object"
+    },
     "MolecularProfileCaseIdentifier": {
       "properties": {
         "caseId": {
@@ -5061,6 +5228,36 @@
       ],
       "type": "object"
     },
+    "MutationDataFilter": {
+      "properties": {
+        "categorization": {
+          "enum": [
+            "MUTATED",
+            "EVENT"
+          ],
+          "type": "string"
+        },
+        "hugoGeneSymbol": {
+          "type": "string"
+        },
+        "profileType": {
+          "type": "string"
+        },
+        "values": {
+          "items": {
+            "items": {
+              "$ref": "#/definitions/DataFilterValue"
+            },
+            "type": "array"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "categorization"
+      ],
+      "type": "object"
+    },
     "MutationPositionIdentifier": {
       "properties": {
         "entrezGeneId": {
@@ -5291,6 +5488,401 @@
       ],
       "type": "object"
     },
+    "ResponseEntityListGenomicDataCountItem": {
+      "properties": {
+        "body": {
+          "items": {
+            "$ref": "#/definitions/GenomicDataCountItem"
+          },
+          "type": "array"
+        },
+        "headers": {
+          "additionalProperties": {
+            "items": {
+              "type": "string"
+            },
+            "type": "array"
+          },
+          "properties": {
+            "host": {
+              "properties": {
+                "address": {
+                  "properties": {
+                    "address": {
+                      "items": {
+                        "format": "byte",
+                        "type": "string"
+                      },
+                      "type": "array"
+                    },
+                    "anyLocalAddress": {
+                      "type": "boolean"
+                    },
+                    "canonicalHostName": {
+                      "type": "string"
+                    },
+                    "hostAddress": {
+                      "type": "string"
+                    },
+                    "hostName": {
+                      "type": "string"
+                    },
+                    "linkLocalAddress": {
+                      "type": "boolean"
+                    },
+                    "loopbackAddress": {
+                      "type": "boolean"
+                    },
+                    "mcglobal": {
+                      "type": "boolean"
+                    },
+                    "mclinkLocal": {
+                      "type": "boolean"
+                    },
+                    "mcnodeLocal": {
+                      "type": "boolean"
+                    },
+                    "mcorgLocal": {
+                      "type": "boolean"
+                    },
+                    "mcsiteLocal": {
+                      "type": "boolean"
+                    },
+                    "multicastAddress": {
+                      "type": "boolean"
+                    },
+                    "siteLocalAddress": {
+                      "type": "boolean"
+                    }
+                  },
+                  "type": "object"
+                },
+                "hostName": {
+                  "type": "string"
+                },
+                "hostString": {
+                  "type": "string"
+                },
+                "port": {
+                  "format": "int32",
+                  "type": "integer"
+                },
+                "unresolved": {
+                  "type": "boolean"
+                }
+              },
+              "type": "object"
+            },
+            "accept": {
+              "items": {
+                "$ref": "#/definitions/MediaType"
+              },
+              "type": "array"
+            },
+            "acceptCharset": {
+              "items": {
+                "properties": {
+                  "registered": {
+                    "type": "boolean"
+                  }
+                },
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "acceptLanguage": {
+              "items": {
+                "properties": {
+                  "range": {
+                    "type": "string"
+                  },
+                  "weight": {
+                    "format": "double",
+                    "type": "number"
+                  }
+                },
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "acceptLanguageAsLocales": {
+              "items": {
+                "properties": {
+                  "country": {
+                    "type": "string"
+                  },
+                  "displayCountry": {
+                    "type": "string"
+                  },
+                  "displayLanguage": {
+                    "type": "string"
+                  },
+                  "displayName": {
+                    "type": "string"
+                  },
+                  "displayScript": {
+                    "type": "string"
+                  },
+                  "displayVariant": {
+                    "type": "string"
+                  },
+                  "extensionKeys": {
+                    "items": {
+                      "type": "string"
+                    },
+                    "type": "array",
+                    "uniqueItems": true
+                  },
+                  "iso3Country": {
+                    "type": "string"
+                  },
+                  "iso3Language": {
+                    "type": "string"
+                  },
+                  "language": {
+                    "type": "string"
+                  },
+                  "script": {
+                    "type": "string"
+                  },
+                  "unicodeLocaleAttributes": {
+                    "items": {
+                      "type": "string"
+                    },
+                    "type": "array",
+                    "uniqueItems": true
+                  },
+                  "unicodeLocaleKeys": {
+                    "items": {
+                      "type": "string"
+                    },
+                    "type": "array",
+                    "uniqueItems": true
+                  },
+                  "variant": {
+                    "type": "string"
+                  }
+                },
+                "type": "object"
+              },
+              "type": "array"
+            },
+            "acceptPatch": {
+              "items": {
+                "$ref": "#/definitions/MediaType"
+              },
+              "type": "array"
+            },
+            "accessControlAllowCredentials": {
+              "type": "boolean"
+            },
+            "accessControlAllowHeaders": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "accessControlAllowMethods": {
+              "items": {
+                "$ref": "#/definitions/HttpMethod"
+              },
+              "type": "array"
+            },
+            "accessControlAllowOrigin": {
+              "type": "string"
+            },
+            "accessControlExposeHeaders": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "accessControlMaxAge": {
+              "format": "int64",
+              "type": "integer"
+            },
+            "accessControlRequestHeaders": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "accessControlRequestMethod": {
+              "$ref": "#/definitions/HttpMethod"
+            },
+            "all": {
+              "additionalProperties": {
+                "type": "string"
+              },
+              "type": "object"
+            },
+            "allow": {
+              "items": {
+                "$ref": "#/definitions/HttpMethod"
+              },
+              "type": "array",
+              "uniqueItems": true
+            },
+            "basicAuth": {
+              "type": "string"
+            },
+            "bearerAuth": {
+              "type": "string"
+            },
+            "cacheControl": {
+              "type": "string"
+            },
+            "connection": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "contentDisposition": {
+              "$ref": "#/definitions/ContentDisposition"
+            },
+            "contentLanguage": {
+              "properties": {
+                "country": {
+                  "type": "string"
+                },
+                "displayCountry": {
+                  "type": "string"
+                },
+                "displayLanguage": {
+                  "type": "string"
+                },
+                "displayName": {
+                  "type": "string"
+                },
+                "displayScript": {
+                  "type": "string"
+                },
+                "displayVariant": {
+                  "type": "string"
+                },
+                "extensionKeys": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "type": "array",
+                  "uniqueItems": true
+                },
+                "iso3Country": {
+                  "type": "string"
+                },
+                "iso3Language": {
+                  "type": "string"
+                },
+                "language": {
+                  "type": "string"
+                },
+                "script": {
+                  "type": "string"
+                },
+                "unicodeLocaleAttributes": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "type": "array",
+                  "uniqueItems": true
+                },
+                "unicodeLocaleKeys": {
+                  "items": {
+                    "type": "string"
+                  },
+                  "type": "array",
+                  "uniqueItems": true
+                },
+                "variant": {
+                  "type": "string"
+                }
+              },
+              "type": "object"
+            },
+            "contentLength": {
+              "format": "int64",
+              "type": "integer"
+            },
+            "contentType": {
+              "$ref": "#/definitions/MediaType"
+            },
+            "date": {
+              "format": "int64",
+              "type": "integer"
+            },
+            "empty": {
+              "type": "boolean"
+            },
+            "etag": {
+              "type": "string"
+            },
+            "expires": {
+              "format": "int64",
+              "type": "integer"
+            },
+            "ifMatch": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "ifModifiedSince": {
+              "format": "int64",
+              "type": "integer"
+            },
+            "ifNoneMatch": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            },
+            "ifUnmodifiedSince": {
+              "format": "int64",
+              "type": "integer"
+            },
+            "lastModified": {
+              "format": "int64",
+              "type": "integer"
+            },
+            "location": {
+              "format": "uri",
+              "type": "string"
+            },
+            "origin": {
+              "type": "string"
+            },
+            "pragma": {
+              "type": "string"
+            },
+            "range": {
+              "items": {
+                "$ref": "#/definitions/HttpRange"
+              },
+              "type": "array"
+            },
+            "upgrade": {
+              "type": "string"
+            },
+            "vary": {
+              "items": {
+                "type": "string"
+              },
+              "type": "array"
+            }
+          },
+          "type": "object"
+        },
+        "statusCode": {
+          "$ref": "#/definitions/HttpStatusCode"
+        },
+        "statusCodeValue": {
+          "format": "int32",
+          "type": "integer"
+        }
+      },
+      "type": "object"
+    },
     "Sample": {
       "properties": {
         "copyNumberSegmentPresent": {
@@ -5709,6 +6301,12 @@
           },
           "type": "array"
         },
+        "mutationDataFilters": {
+          "items": {
+            "$ref": "#/definitions/MutationDataFilter"
+          },
+          "type": "array"
+        },
         "patientTreatmentFilters": {
           "$ref": "#/definitions/AndedPatientTreatmentFilters"
         },
diff --git a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal.ts b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal.ts
index e9e830b05af..fb14d2aa810 100644
--- a/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal.ts
+++ b/packages/cbioportal-ts-api-client/src/generated/CBioPortalAPIInternal.ts
@@ -316,6 +316,33 @@ export type CoExpressionFilter = {
 
         'sampleListId': string
 
+};
+export type ContentDisposition = {
+    'attachment': boolean
+
+        'charset': {
+        'registered': boolean
+
+    }
+
+        'creationDate': string
+
+        'filename': string
+
+        'formData': boolean
+
+        'inline': boolean
+
+        'modificationDate': string
+
+        'name': string
+
+        'readDate': string
+
+        'size': number
+
+        'type': string
+
 };
 export type CopyNumberCount = {
     'alteration': number
@@ -689,6 +716,8 @@ export type GenomicDataCount = {
 
         'label': string
 
+        'uniqueCount': number
+
         'value': string
 
 };
@@ -767,6 +796,45 @@ export type GroupStatistics = {
 
         'standardDeviation': number
 
+};
+export type HttpMethod = {};
+export type HttpRange = {};
+export type HttpStatusCode = {
+    'error': boolean
+
+        'is1xxInformational': boolean
+
+        'is2xxSuccessful': boolean
+
+        'is3xxRedirection': boolean
+
+        'is4xxClientError': boolean
+
+        'is5xxServerError': boolean
+
+};
+export type MediaType = {
+    'parameters': {}
+
+    'charset': {
+        'registered': boolean
+
+    }
+
+    'concrete': boolean
+
+        'qualityValue': number
+
+        'subtype': string
+
+        'subtypeSuffix': string
+
+        'type': string
+
+        'wildcardSubtype': boolean
+
+        'wildcardType': boolean
+
 };
 export type MolecularProfileCaseIdentifier = {
     'caseId': string
@@ -831,6 +899,17 @@ export type MutationCountByPosition = {
 
         'proteinPosStart': number
 
+};
+export type MutationDataFilter = {
+    'categorization': "MUTATED" | "EVENT"
+
+        'hugoGeneSymbol': string
+
+        'profileType': string
+
+        'values': Array < Array < DataFilterValue >
+        >
+
 };
 export type MutationPositionIdentifier = {
     'entrezGeneId': number
@@ -933,6 +1012,201 @@ export type ResourceDefinition = {
 
         'studyId': string
 
+};
+export type ResponseEntityListGenomicDataCountItem = {
+    'body': Array < GenomicDataCountItem >
+
+        'headers': {
+            'host': {
+                'address': {
+                    'address': Array < string >
+
+                        'anyLocalAddress': boolean
+
+                        'canonicalHostName': string
+
+                        'hostAddress': string
+
+                        'hostName': string
+
+                        'linkLocalAddress': boolean
+
+                        'loopbackAddress': boolean
+
+                        'mcglobal': boolean
+
+                        'mclinkLocal': boolean
+
+                        'mcnodeLocal': boolean
+
+                        'mcorgLocal': boolean
+
+                        'mcsiteLocal': boolean
+
+                        'multicastAddress': boolean
+
+                        'siteLocalAddress': boolean
+
+                }
+
+                'hostName': string
+
+                    'hostString': string
+
+                    'port': number
+
+                    'unresolved': boolean
+
+            }
+
+            'accept': Array < MediaType >
+
+                'acceptCharset': Array < {
+                    'registered': boolean
+
+                } >
+
+                'acceptLanguage': Array < {
+                    'range': string
+
+                        'weight': number
+
+                } >
+
+                'acceptLanguageAsLocales': Array < {
+                    'country': string
+
+                        'displayCountry': string
+
+                        'displayLanguage': string
+
+                        'displayName': string
+
+                        'displayScript': string
+
+                        'displayVariant': string
+
+                        'extensionKeys': Array < string >
+
+                        'iso3Country': string
+
+                        'iso3Language': string
+
+                        'language': string
+
+                        'script': string
+
+                        'unicodeLocaleAttributes': Array < string >
+
+                        'unicodeLocaleKeys': Array < string >
+
+                        'variant': string
+
+                } >
+
+                'acceptPatch': Array < MediaType >
+
+                'accessControlAllowCredentials': boolean
+
+                'accessControlAllowHeaders': Array < string >
+
+                'accessControlAllowMethods': Array < HttpMethod >
+
+                'accessControlAllowOrigin': string
+
+                'accessControlExposeHeaders': Array < string >
+
+                'accessControlMaxAge': number
+
+                'accessControlRequestHeaders': Array < string >
+
+                'accessControlRequestMethod': HttpMethod
+
+                'all': {}
+
+                'allow': Array < HttpMethod >
+
+                'basicAuth': string
+
+                'bearerAuth': string
+
+                'cacheControl': string
+
+                'connection': Array < string >
+
+                'contentDisposition': ContentDisposition
+
+                'contentLanguage': {
+                'country': string
+
+                    'displayCountry': string
+
+                    'displayLanguage': string
+
+                    'displayName': string
+
+                    'displayScript': string
+
+                    'displayVariant': string
+
+                    'extensionKeys': Array < string >
+
+                    'iso3Country': string
+
+                    'iso3Language': string
+
+                    'language': string
+
+                    'script': string
+
+                    'unicodeLocaleAttributes': Array < string >
+
+                    'unicodeLocaleKeys': Array < string >
+
+                    'variant': string
+
+            }
+
+                'contentLength': number
+
+                'contentType': MediaType
+
+                'date': number
+
+                'empty': boolean
+
+                'etag': string
+
+                'expires': number
+
+                'ifMatch': Array < string >
+
+                'ifModifiedSince': number
+
+                'ifNoneMatch': Array < string >
+
+                'ifUnmodifiedSince': number
+
+                'lastModified': number
+
+                'location': string
+
+                'origin': string
+
+                'pragma': string
+
+                'range': Array < HttpRange >
+
+                'upgrade': string
+
+                'vary': Array < string >
+
+        }
+
+        'statusCode': HttpStatusCode
+
+        'statusCodeValue': number
+
 };
 export type Sample = {
     'copyNumberSegmentPresent': boolean
@@ -1137,6 +1411,8 @@ export type StudyViewFilter = {
         'genomicProfiles': Array < Array < string >
         >
 
+        'mutationDataFilters': Array < MutationDataFilter >
+
         'patientTreatmentFilters': AndedPatientTreatmentFilters
 
         'patientTreatmentGroupFilters': AndedPatientTreatmentFilters
@@ -5266,6 +5542,89 @@ export default class CBioPortalAPIInternal {
                 return response.body;
             });
         };
+    fetchMutationDataCountsUsingPOSTURL(parameters: {
+        'projection' ? : "ID" | "SUMMARY" | "DETAILED" | "META",
+        'genomicDataCountFilter' ? : GenomicDataCountFilter,
+        $queryParameters ? : any
+    }): string {
+        let queryParameters: any = {};
+        let path = '/api/mutation-data-counts/fetch';
+        if (parameters['projection'] !== undefined) {
+            queryParameters['projection'] = parameters['projection'];
+        }
+
+        if (parameters.$queryParameters) {
+            Object.keys(parameters.$queryParameters).forEach(function(parameterName) {
+                var parameter = parameters.$queryParameters[parameterName];
+                queryParameters[parameterName] = parameter;
+            });
+        }
+        let keys = Object.keys(queryParameters);
+        return this.domain + path + (keys.length > 0 ? '?' + (keys.map(key => key + '=' + encodeURIComponent(queryParameters[key])).join('&')) : '');
+    };
+
+    /**
+     * Fetch mutation data counts by GenomicDataCountFilter
+     * @method
+     * @name CBioPortalAPIInternal#fetchMutationDataCountsUsingPOST
+     * @param {string} projection - Level of detail of the response
+     * @param {} genomicDataCountFilter - A web service for supplying JSON formatted data to cBioPortal clients. Please note that this API is currently in beta and subject to change.
+     */
+    fetchMutationDataCountsUsingPOSTWithHttpInfo(parameters: {
+        'projection' ? : "ID" | "SUMMARY" | "DETAILED" | "META",
+        'genomicDataCountFilter' ? : GenomicDataCountFilter,
+        $queryParameters ? : any,
+            $domain ? : string
+    }): Promise < request.Response > {
+        const domain = parameters.$domain ? parameters.$domain : this.domain;
+        const errorHandlers = this.errorHandlers;
+        const request = this.request;
+        let path = '/api/mutation-data-counts/fetch';
+        let body: any;
+        let queryParameters: any = {};
+        let headers: any = {};
+        let form: any = {};
+        return new Promise(function(resolve, reject) {
+            headers['Accept'] = 'application/json';
+            headers['Content-Type'] = 'application/json';
+
+            if (parameters['projection'] !== undefined) {
+                queryParameters['projection'] = parameters['projection'];
+            }
+
+            if (parameters['genomicDataCountFilter'] !== undefined) {
+                body = parameters['genomicDataCountFilter'];
+            }
+
+            if (parameters.$queryParameters) {
+                Object.keys(parameters.$queryParameters).forEach(function(parameterName) {
+                    var parameter = parameters.$queryParameters[parameterName];
+                    queryParameters[parameterName] = parameter;
+                });
+            }
+
+            request('POST', domain + path, body, headers, queryParameters, form, reject, resolve, errorHandlers);
+
+        });
+    };
+
+    /**
+     * Fetch mutation data counts by GenomicDataCountFilter
+     * @method
+     * @name CBioPortalAPIInternal#fetchMutationDataCountsUsingPOST
+     * @param {string} projection - Level of detail of the response
+     * @param {} genomicDataCountFilter - A web service for supplying JSON formatted data to cBioPortal clients. Please note that this API is currently in beta and subject to change.
+     */
+    fetchMutationDataCountsUsingPOST(parameters: {
+        'projection' ? : "ID" | "SUMMARY" | "DETAILED" | "META",
+        'genomicDataCountFilter' ? : GenomicDataCountFilter,
+        $queryParameters ? : any,
+            $domain ? : string
+    }): Promise < ResponseEntityListGenomicDataCountItem > {
+        return this.fetchMutationDataCountsUsingPOSTWithHttpInfo(parameters).then(function(response: request.Response) {
+            return response.body;
+        });
+    };
     getAllReferenceGenomeGenesUsingGETURL(parameters: {
         'genomeName': string,
         $queryParameters ? : any