bb81d6d10b9c22486ee6745375383d9a8d136230
max
  Fri Aug 19 03:10:28 2022 -0700
documenting refseqgene alias for lrg, very confusing, refs #29891

diff --git src/hg/makeDb/trackDb/human/lrg.html src/hg/makeDb/trackDb/human/lrg.html
index 93ce4db..cdb5d11 100644
--- src/hg/makeDb/trackDb/human/lrg.html
+++ src/hg/makeDb/trackDb/human/lrg.html
@@ -1,27 +1,35 @@
 <H2>Description</H2>
 <P>
 <A HREF="http://www.lrg-sequence.org/"
 TARGET=_BLANK>Locus Reference Genomic (LRG)</A>
 sequences are manually curated, stable DNA sequences that surround a
 locus (typically a gene) and provide an unchanging coordinate system
 for reporting sequence variants.  They are not necessarily identical
 to the corresponding sequence in a particular reference genome
 assembly (such as $date), but can be mapped to each version of a
 reference genome assembly in order to convert between the stable LRG
 variant coordinates and the various assembly coordinates.
 </P>
+
+<P>
+We import the data from the LRG database at the EBI. 
+The NCBI RefSeqGene database is almost identical to LRG, 
+but it may contain a few more sequences. See <a target=_blank
+href="https://www.ncbi.nlm.nih.gov/refseq/rsg/lrg/">the NCBI documentation</a>.
+</P>
+
 <P>
 Each LRG record also includes at least one stable transcript
 on which variants may be reported.  These transcripts
 appear in the LRG Transcripts track in the Gene and Gene Predictions
 track section.</P>
 
 <H2>Methods</H2>
 <P>
 LRG sequences are suggested by the community studying a locus (for example,
 Locus-Specific Database curators, research laboratories, mutation consortia).
 LRG curators then examine the submitted transcript as well as other known
 transcripts at the locus, in the context of alignment and public expression
 data.
 For more information on the selection and annotation process, see the 
 <A HREF="http://www.lrg-sequence.org/faq/" TARGET=_BLANK>LRG FAQ</A>,