East Horizon Release Notes Latest

These release notes are a draft and reflect our current best information about the upcoming version. They can and probably will change in the weeks leading up to the production release. Final release notes will be published on July 19th, 2025.

Version 3.4 - July 2025

East Horizon version 3.4, released on July 19, 2025, includes:

 New Features

AreaDescription
Multiplicity: Design

Multi Arm Multi Stage (MAMS): P-value Combination Method for Time to Event, Continuous and Binary endpoints.

  • You can simulate confirmatory multi arm, multi stage trials for a continuous endpoint using a difference of means test and a binary endpoint using a difference of proportions test.
  • You can specify treatment selection rules to assess for stopping the trial in the second stage.

Multiplicity: Design

Multi Arm Multi Stage (MAMS): Cumulative Method for Continuous and Binary endpoints.

  • You can design and simulate confirmatory multi arm, multi stage trials for a continuous endpoint using a difference of means test and a binary endpoint using a difference of proportions test.
  • You can specify treatment selection rules to assess for stopping the trial in the second stage via simulation.

Multiplicity: Design

Dual Endpoints

  • You can now design and simulate a two-arm confirmatory fixed sample trial for two time to event endpoints or a combination of a time to event and binary endpoints.

R-Connection: Explore

Multi arm Confirmatory, P-value combination Method: Binary and Continuous Endpoints.

  • You have the option to specify R code, R functions or files with or without initialization of all the tasks.

  • You can customize patient enrollment, randomization, dropout, analysis, response and treatment selection using R code.

R-Connection: Troubleshooting

You can perform troubleshooting while doing custom patient data generation and analysis using custom R codes for East Horizon Explore and Design tests. This helps to quickly identify and solve errors in R code and is achieved by:

  • Improving Error Messages

  • Post Simulation Validation & Troubleshooting

Available for the following endpoints:

Two Arm Confirmatory Endpoints:

  • Continuous Endpoint

  • Binary Endpoint

  • TTE Endpoint

  • Repeated Measures

Multiarm Confirmatory Endpoints:

  • Continuous Endpoint

  • Binary Endpoint

Results

The Results section has been revamped for Explore projects. 

This applies to all the applicable endpoints in the Explore product: two arm confirmatory (Time to Event, Continuous, Binary and Count), multi arm confirmatory (Continuous, Binary, TTE), dual endpoint (TTE, Binary), Vaccine Efficacy and Dose Finding designs, including assurance, repeated measures and stratification when supported. 

Improvements include:

  • Heat Map & Scatterplot Color Palettes are customizable.
  • Sorting & Annotation options for design/scenario parameters selection in Heatmap are combined into a single selection workflow
  • Standard filters can be applied to specific columns within the Table View in addition to being applied at the Table level.
  • Table columns are customizable: specific columns can be included, removed, rearranged, etc. within the Table View. Additionally, column width can be adjusted as well.
  • Full user provided precision is applied to inputs for display and upto 3 decimal precision to outputs for display (i.e. the number of decimal places.)
  • Explore tab is now renamed to ‘Details’ tab
  • Test Designs is now renamed to ‘Dashboard’ tab
  • Find Designs is now available under Search Icon on the top right corner alongside the Find Scenarios feature
  • The Heatmap and Scatterplots are now integrated with the Table View
  • This allows you to easily interact between a model chosen from the heat map / scatterplot with its summary details in the table view. If you select a model in the Heatmap / Scatterplot, the same model is highlighted in the table.
  • Any Filters applied in the table will also be reflected in the heat map and scatterplot.
  • When you Favorite or Unfavorite a model in the table, it will also be reflected in the heat map and scatterplot.
  • The Weights (Scoring) feature is more easily accessible throughout the Results.
  • The ability to download Results data to a CSV file has been improved.
  • Summary Statistics Data download
    • This has been improved to allow selection of upto 500 models using a “Select all” checkbox in the model table up from 50 models allowed before.
  • Design Summary View
    • Data is displayed and summarized in Design-wise fashion.
    • This transitions from a Model to a Design focused view.
    • Data is displayed via mean and range (Min, Avg, Max)
  • Views
    • Earlier, the system allowed saving of one original view and one modified (customized) view

Users can now save up to 5 customized sets of results, with applicable modifications to columns, weights, filters, etc., for a given simulation. These are called Views.

  • The ‘Original View’ is the original simulation Results.
  • Any change made to Filters or Weights or Plots or Tables in the default View can be “Saved as” a new View with a unique, meaningful name.
  • Views can be duplicated.
  • Views can be deleted

 

File management system

You can now store files and folders with more flexibility in East Horizon. Option is now available to use files and folder structures to store the R files that are uploaded to East Horizon for using them in East Horizon R connection.

  • You can copy, move and rename files and folders in East Horizon File management System.

  • You can do Multi-Select Operations on multiple files concurrently.

  • You can view supported file types in a Reading Pane as well as in a separate viewing window.

  • You can edit selected file type.

  • You can archive outdated files, and view and recover previously archived files.

  • You can create and use files from your own projects in a file management system projects as per appropriate access rights.

  • You can see a project folder corresponding to the project in the File Management System.

 

 

 

 

 

 

Improvements

AreaDescription
Design

For a multi-arm TTE study, the design product supports fixed-sample designs with the following enhancements:

  • Support for Harrington-Fleming and Max Combo test statistics

  • Arm-specific piecewise exponential hazards and dropout rates

  • Multiplicity adjustment controls using fallback and Hochberg procedures

Design

You can see the results in the layout as per your selection by clicking on the Layout button in the Home page of the Design results.

Two options are available as follows:

  • Compact

  • Spacious

Project settingsOrganization admins can now choose the system default settings for the projects as public or private. By default, the project access is set to Public. The default setting can be changed to Private by admins.
Project settings

You can add other specific users to their private projects.

CompareYou can see parameters related to Interim Analysis, SSR in the Design comparison. This feature is currently available in Explore comparison.
TooltipsYou can view tooltips for user specified R files in Explore and Design.
R Coding Assistant: Feedback

You can now provide feedback about your experience for East Horizon R code Assistant which would help us improve it to better suit your needs.

Available for the following endpoints:

Two Arm Confirmatory Endpoints:

  • Continuous Endpoint

  • Binary Endpoint

  • TTE Endpoint

  • Repeated Measures

Multiarm Confirmatory Endpoints:

  • Continuous Endpoint

  • Binary Endpoint

Custom variables

You can now delete auto-populated Custom variables (declared as UserParam$<CustomVariableName>). This would help you remove conditionally used custom variables from cards.

  • If you delete custom variables not required for a model, you can successfully simulate it.

  • If you delete custom variables required for a model, and try to simulate a model, the application displays an appropriate error.

 

Fixes

AreaDescription
InputsWhen MAMS-TTE project was created and out of range Hazard Ratio value was entered, it displayed an error message with comma.
InputsWhen MAMS-TTE project was created, out of range values were accepted in Hazard Ratio field in the Response section.
ResultsFor Difference of Means and Difference of Proportions group sequential designs cumulAlphaSpent and cumulBetaSpent was not matching with the benchmark values, when boundary was not checked.
Project setupUser was able to rename the project of another user.
ProjectWhen you clicked Continue button multiple times on New Input Set page, Collection could not be created message was displayed.

Results

When Endpoint Priorities Are Set as EP1 Secondary and EP2 Primary In Dual Endpoint Study Design, incorrect simulation outputs are generated.

 

 

 

 

Known Issues

AreaDescriptionWorkaround
ResultsWhen you create a Custom view for any project in Results by applying filters on Score fields and save and switch between Original view and Custom view, the plot appears blank and model count is zero.None
ResultsWhen you simulate an Explore Input set, the Favorite scenario option is disabled in the Model details section of Results.None
File management systemWhen you move or copy files, there are no files seen under the folder , even though the folder actually has files uploaded.None
File management systemIn the File Management System, when you access the Public folder, the file “empty.txt” appears intermittently.None
ResultsFor MAMS TTE: GS, the results are inconsistent, particularly among extremely low completers.None
InputsWhen the Input Method is set to 'Median Survival Times' and the Distribution is modified from Exponential to Piecewise Exponential, the Hazard Rate values remain consistent across both the Design - Stratification and MAMS - TTE (Explore) projects.None
InputsIn the design task for the MAMS TTE project, the Response card fails to save when the dropout distribution is changed from Exponential or Piecewise Exponential to ‘None’.None
InputsThe user-specified R option is available in Design but is not found in Explore when you create a project for continuous and binary endpoints with Follow-up set to 0.None
SimulationThe East Horizon Engine encounters an error during the TTE-GS simulation when running 1 million simulations, specifically when the summary statistics file saving feature is enabled.None
InputsIn the Explore Task Input Set Response Cards, an error occurs when attempting to discard edits made to control fields. This issue is present in both dual endpoints: TTE-Binary and the single TTE endpoint: Stratification.None

Qualification Documents

Qualification plans and reports for this release of East Horizon are here.



East Horizon
Release Note
v3.4
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