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MILAB-6848: fix sc TCR domain mapping #42

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MILAB-6848: fix sc TCR domain mapping #42

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18da745
MILAB-6848: fix sc TCR domain mapping
mchernys Aug 31, 2026
3c83182
MILAB-6848: list sc chains in classic annotation order
mchernys Aug 31, 2026
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8 changes: 8 additions & 0 deletions .changeset/fix-sc-tcr-chain-letters.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
---
'@platforma-open/milaboratories.vj-usage.ui': minor
'@platforma-open/milaboratories.vj-usage': minor
---

Fix single-cell TCR chain selector mapping: A/B were swapped for TCRAB and TCRGD. Producers (mixcr-clonotyping, import-vdj-data) assign A to the more diverse chains: Beta and Delta. The selector was running usage on the opposite chain from the one labelled. Existing blocks are relabelled only, the stored chain value is unchanged, so nothing re-runs.

The selector also lists chains in the classic annotation order again — Alpha/Beta and Gamma/Delta — instead of the value order A/B.
10 changes: 6 additions & 4 deletions ui/src/utils.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,8 @@ export function useScChainOptions(

const receptor = axisSpec.domain?.["pl7.app/vdj/receptor"];

// Values are the producers' (mixcr-clonotyping, import-vdj-data): A is the more diverse
// chain. Array order is display order, kept in the classic annotation order.
let options: { label: string; value: string }[];
switch (receptor) {
case "IG":
Expand All @@ -42,14 +44,14 @@ export function useScChainOptions(
break;
case "TCRAB":
options = [
{ label: "Alpha", value: "A" },
{ label: "Beta", value: "B" },
{ label: "Alpha", value: "B" },
{ label: "Beta", value: "A" },
];
break;
case "TCRGD":
options = [
{ label: "Gamma", value: "A" },
{ label: "Delta", value: "B" },
{ label: "Gamma", value: "B" },
{ label: "Delta", value: "A" },
];
break;
default:
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