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>

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+<h2>Description</h2>
+<p>
+The <b>Short Tandem Repeat (STR) Variation</b> super track is a collection of tracks
+displaying population-level genetic variation at short tandem repeat (STR) loci across
+the human genome. STRs, also known as microsatellites, are consecutive repetitions of
+1-6 nucleotide motifs. They are among the most polymorphic loci in the genome due to high
+rates of repeat unit insertions and deletions caused primarily by polymerase slippage
+during DNA replication.</p>
+
+<p>
+STR variation has been implicated in a range of human traits and diseases,
+including gene expression regulation, cancer risk, and neurodevelopmental disorders.
+This super track provides genome-wide STR annotations and allele frequency data from
+large-scale population cohorts.</p>
+
+<h2>Tracks in this collection</h2>
+<ul>
+<li><b><a href="/cgi-bin/hgTrackUi?db=hg38&g=webstr">WebSTR</a></b> &mdash;
+1.7 million STR loci from the EnsembleTR panel with allele frequency data from the
+1000 Genomes Project (3,550 individuals across five continental populations).
+See the <a href="webstr.html">WebSTR track documentation</a> for full details.</li>
+</ul>
+
+<h2>Credits</h2>
+<p>
+Thanks to the data providers of the individual tracks listed above.
+See each track's documentation page for specific credits.</p>