6bb46ba4e8d91ab3670d354ef18d8bf5321ec9ee
max
  Thu Mar 12 07:15:29 2026 -0700
Add WebSTR short tandem repeat track under new strVar supertrack

New track with 1.7M STR loci from WebSTR EnsembleTR panel (hg38),
with allele frequency data for 5 populations from 1000 Genomes
(3,550 samples). Includes conversion script, .as schema, trackDb,
and full HTML documentation, refs #36652

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

diff --git src/hg/makeDb/trackDb/human/hg38/webstr.ra src/hg/makeDb/trackDb/human/hg38/webstr.ra
new file mode 100644
index 00000000000..379cebfd905
--- /dev/null
+++ src/hg/makeDb/trackDb/human/hg38/webstr.ra
@@ -0,0 +1,21 @@
+track strVar
+shortLabel STR Variation
+longLabel Short Tandem Repeat Variation
+group varRep
+superTrack on
+html strVar.html
+visibility hide
+
+    track webstr
+    shortLabel WebSTR
+    longLabel WebSTR Short Tandem Repeat Loci (EnsembleTR Panel, 1000 Genomes)
+    type bigBed 9 +
+    itemRgb on
+    bigDataUrl /gbdb/hg38/webstr/webstr.bb
+    visibility dense
+    superTrack strVar dense
+    url https://webstr.ucsd.edu/locus?repeat_id=$$&genome=hg38
+    urlLabel WebSTR locus page
+    searchIndex name
+    mouseOver $motif repeat, $numCopies copies, period $period
+    html webstr.html