00e086afbcb8296c6aef946c13eeb777f34bac02
max
  Mon May 11 07:03:10 2026 -0700
mei: new track for HGSVC3 mobile element insertions on hg38 and hs1

12,642 MEIs on hg38, 12,919 on hs1, from the HGSVC3 callset (Logsdon
et al. 2025). Single shared trackDb stanza in human/mei.ra with $D
substitution. Okabe-Ito colors, INS-svLen:carrierCount item names,
inserted DNA in an insertSeq field. Cross-link to lrSv via
relatedTracks.ra. refs #37524

diff --git src/hg/makeDb/doc/hs1/mei.txt src/hg/makeDb/doc/hs1/mei.txt
new file mode 100644
index 00000000000..953e5baf4c6
--- /dev/null
+++ src/hg/makeDb/doc/hs1/mei.txt
@@ -0,0 +1,6 @@
+# 2026-05-09 Claude (max) - Mobile Element Insertions track collection (mei)
+# The mei supertrack lives in the human/ directory of trackDb so the
+# hg38 and hs1 builds share a single trackDb stanza (with $D substitution
+# in bigDataUrl). The build steps for both assemblies are documented
+# together in:
+#   ~/kent/src/hg/makeDb/doc/hg38/mei.txt