Page Last Updated: June 2, 2026

Version: BR21.0 (BR20.5)🔗

BR21.0 was renumbered from BR20.5 and will still appear as BR20.5 in the Lasso Pre-Release System

Release Date: 2026-03-30

Participants

3,605

Total Visits

8,415

V01: 3,545 | V02: 2,310
V03: 1,398 | V04: 679 | V05: 483

By Sex

V02 onwards visit done:
1,159 (F) | 1,271 (M)

V01 Only: 1,175 (Unknown)

BR21.0 Resolved Issues & Updates (Provisional)🔗

NOTE: Items Are Provisional

These items will remain listed as ACTIVE issues and pending updates until final Workgroup/SME confirmation that the resolution has been successfully implemented (also see Resolved Issues & Updates Archive for a running record of confirmed resolved items starting at BR21.0).

= Completed Pending Update (Provisional) = Resolved Known Issue (Provisional)

Domain	Table/Topic	Summary
NA/All	Language	Addition of language of administration across all instruments where applicable.
ADM	Study Navigators	Populate SUBSTANCE_USE and OTHER checkbox fields.
BIO	Olink	Addition of Olink Explore 384 Inflammation 1 Panel, proteomics measure of maternal inflammation during pregnancy
BIO	Nails & Urine	Remove quotes from level values to prevent double quotes in downloaded data (e.g. 1=""positive"").
EEG	.set files	Update EEG .set files to include subject release IDs.
MH	ERICA	Addition of the ERICA instrument tables (`mh_cg_erica{_rel}_3_9m`); raw scores only.
MRI	BrainSwipes	BrainSwipes QC results will be updated with latest results currently available in the HBCD Private Release Notes.
	XCP-D	Metadata values for `sub_domain` were corrected to `Structural MRI` for tabulated XCP-D Myers-Labonte `*morph.tsv` files.
	Raw BIDS	Resolved 2 corrupted bold runs in V02 raw BIDS (see filepaths in HBCD Private Release Notes).
NCL	MLDS	Correct Data Dictionary 'description' element to remove erroneous text that appears at end (e.g., "Â Â Â")
	Vineland	Addition of language field to `ncl_cg_vabs`.
	Vineland	Correct subset of variables with typo in the spelling of "receptive."
SED	Child Demo	Household roster updated to clarify that counts exclude the main child.
SED	Demographics	Add back `sed_bm_demo_residence_{001\|002}` (present in prior release then missing).