diff --git a/Libs/Optimize/OptimizeParameters.cpp b/Libs/Optimize/OptimizeParameters.cpp
index fa6a904d64..41f9f1800d 100644
--- a/Libs/Optimize/OptimizeParameters.cpp
+++ b/Libs/Optimize/OptimizeParameters.cpp
@@ -53,6 +53,7 @@ const std::string use_geodesics_to_landmarks = "use_geodesics_to_landmarks";
 const std::string geodesics_to_landmarks_weight = "geodesics_to_landmarks_weight";
 const std::string particle_format = "particle_format";
 const std::string geodesic_remesh_percent = "geodesic_remesh_percent";
+const std::string output_prefix = "output_prefix";
 }  // namespace Keys
 
 //---------------------------------------------------------------------------
@@ -96,7 +97,8 @@ OptimizeParameters::OptimizeParameters(ProjectHandle project) {
                                          Keys::use_linear_regression,
                                          Keys::time_points_per_subject,
                                          Keys::particle_format,
-                                         Keys::geodesic_remesh_percent};
+                                         Keys::geodesic_remesh_percent,
+                                         Keys::output_prefix};
 
   std::vector<std::string> to_remove;
 
@@ -884,3 +886,6 @@ double OptimizeParameters::get_geodesic_remesh_percent() { return params_.get(Ke
 void OptimizeParameters::set_geodesic_remesh_percent(double value) {
   params_.set(Keys::geodesic_remesh_percent, value);
 }
+
+//---------------------------------------------------------------------------
+void OptimizeParameters::set_output_prefix(std::string value) { params_.set(Keys::output_prefix, value); }
diff --git a/Libs/Optimize/OptimizeParameters.h b/Libs/Optimize/OptimizeParameters.h
index 1adc692b83..7c62f9299d 100644
--- a/Libs/Optimize/OptimizeParameters.h
+++ b/Libs/Optimize/OptimizeParameters.h
@@ -138,6 +138,7 @@ class OptimizeParameters {
   double get_geodesic_remesh_percent();
   void set_geodesic_remesh_percent(double value);
 
+  void set_output_prefix(std::string value);
 
  private:
   std::string get_output_prefix();
diff --git a/Studio/Analysis/AnalysisTool.cpp b/Studio/Analysis/AnalysisTool.cpp
index d760becda8..6a89fcfff4 100644
--- a/Studio/Analysis/AnalysisTool.cpp
+++ b/Studio/Analysis/AnalysisTool.cpp
@@ -138,7 +138,7 @@ AnalysisTool::AnalysisTool(Preferences& prefs) : preferences_(prefs) {
   ui_->metrics_open_button->setChecked(false);
 
   /// TODO nothing there yet (regression tab)
-  ui_->tabWidget->removeTab(3);
+  // ui_->tabWidget->removeTab(3);
 
   for (auto button : {ui_->distance_transform_radio_button, ui_->mesh_warping_radio_button, ui_->legacy_radio_button}) {
     connect(button, &QRadioButton::clicked, this, &AnalysisTool::reconstruction_method_changed);
@@ -381,7 +381,7 @@ void AnalysisTool::handle_analysis_options() {
       ui_->mcaLevelBetweenButton->setEnabled(true);
       ui_->vanillaPCAButton->setChecked(true);
     }
-  } else {
+  } else if (ui_->tabWidget->currentWidget() == ui_->regression_tab){
     // regression mode
     ui_->sampleSpinBox->setEnabled(false);
     ui_->medianButton->setEnabled(false);
@@ -389,6 +389,14 @@ void AnalysisTool::handle_analysis_options() {
     ui_->pcaAnimateCheckBox->setEnabled(false);
     ui_->pcaModeSpinBox->setEnabled(false);
     pca_animate_timer_.stop();
+    
+  } else {
+    ui_->sampleSpinBox->setEnabled(false);
+    ui_->medianButton->setEnabled(false);
+    ui_->pcaSlider->setEnabled(false);
+    ui_->pcaAnimateCheckBox->setEnabled(false);
+    ui_->pcaModeSpinBox->setEnabled(false);
+    pca_animate_timer_.stop();
   }
 
   update_difference_particles();
@@ -863,6 +871,8 @@ void AnalysisTool::store_settings() {
   params.set("network_pvalue_of_interest", ui_->network_pvalue_of_interest->text().toStdString());
   params.set("network_pvalue_threshold", ui_->network_pvalue_threshold->text().toStdString());
 
+  params.set("regression_slope", session->)
+
   session_->get_project()->set_parameters(Parameters::ANALYSIS_PARAMS, params);
 }
 
diff --git a/Studio/Data/Session.cpp b/Studio/Data/Session.cpp
index 26b335d644..eb5b0ebe45 100644
--- a/Studio/Data/Session.cpp
+++ b/Studio/Data/Session.cpp
@@ -822,6 +822,8 @@ void Session::new_plane_point(PickResult result) {
 //---------------------------------------------------------------------------
 QString Session::get_filename() { return filename_; }
 
+QString Session::get_parent_dir()
+
 //---------------------------------------------------------------------------
 int Session::get_num_shapes() { return shapes_.size(); }
 
diff --git a/Studio/Interface/ShapeWorksStudioApp.cpp b/Studio/Interface/ShapeWorksStudioApp.cpp
index b060c7b696..6499a97155 100644
--- a/Studio/Interface/ShapeWorksStudioApp.cpp
+++ b/Studio/Interface/ShapeWorksStudioApp.cpp
@@ -1485,6 +1485,14 @@ void ShapeWorksStudioApp::open_project(QString filename) {
 
   groom_tool_->load_params();
   optimize_tool_->load_params();
+
+  if (optimize_tool_->get_regression_analysis_status())
+  {
+    // Verify if slope and intercept files exist
+    auto particles_dir = session_->get_filename().dir().absolutePath().toStdString();
+    auto slope_filename = session_->get_filename().toStdString()
+  }
+  analysis_tool_->store_settings();
   update_from_preferences();
 
   update_tool_mode();
diff --git a/Studio/Optimize/OptimizeTool.h b/Studio/Optimize/OptimizeTool.h
index e62b58a896..f88e322626 100644
--- a/Studio/Optimize/OptimizeTool.h
+++ b/Studio/Optimize/OptimizeTool.h
@@ -37,6 +37,10 @@ Q_OBJECT;
   //! Load params from project
   void load_params();
   //! Store params to project
+
+  //! Get flag if regression needs to enabled for analysis in Studio
+  inline bool get_regression_analysis_status() { return regression_analysis_status; }
+
   void store_params();
 
   //! Enable action buttons
@@ -94,5 +98,7 @@ public Q_SLOTS:
   QElapsedTimer elapsed_timer_;
 
   Ui_OptimizeTool* ui_;
+
+  bool regression_analysis_status_;
 };
 }