docs: clarify ASCN CCF and Clonal column UI display behavior in File-Formats.md#11994
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docs: clarify ASCN CCF and Clonal column UI display behavior in File-Formats.md#11994
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docs: clarify ASCN CCF and Clonal column UI display behavior in File-Formats.md
Feb 26, 2026
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Pull request overview
Updates the mutation file-format documentation for allele-specific copy number (ASCN) namespace columns, adding clarifications about how certain ASCN fields are shown in the patient view mutation table.
Changes:
- Expanded the description of
ASCN.CCF_EXPECTED_COPIESto include patient-view display behavior for single- vs multi-sample patients. - Expanded the description of
ASCN.CLONALto include how it appears as a boolean-style “Clonal” indicator in the patient view mutation table.
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| 42. **ASCN.ASCN_METHOD (Optional)**: Method used to obtain ASCN data e.g "FACETS". | ||
| 43. **ASCN.CCF_EXPECTED_COPIES (Optional)**: Cancer-cell fraction if mutation exists on major allele. | ||
| 43. **ASCN.CCF_EXPECTED_COPIES (Optional)**: Cancer-cell fraction if mutation exists on major allele. Displayed as a plain number for single-sample patients or as a bar chart for multi-sample patients in the patient view mutation table. |
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Multiple frontend PRs (#5386, #5396, #5399, #5405) all target the same two UI changes in the patient view mutation table: renaming the "Clonality" column to "Clonal" and displaying CCF as a plain number instead of a bar chart for single-sample patients. The backend documentation did not reflect this display behavior.
Changes
ASCN.CCF_EXPECTED_COPIES: added that it renders as a plain number for single-sample patients and as a bar chart for multi-sample patientsASCN.CLONAL: added that it renders as a "Clonal" boolean column where only"Clonal"values are indicated with a dot (not "Clonality", matching the frontend rename)View original Slack conversation
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