diff --git a/playwright-e2e/tests/brain/brain-regression-test.spec.ts b/playwright-e2e/tests/brain/brain-regression-test.spec.ts
index 7d1b29a776..38a78c5312 100644
--- a/playwright-e2e/tests/brain/brain-regression-test.spec.ts
+++ b/playwright-e2e/tests/brain/brain-regression-test.spec.ts
@@ -136,6 +136,9 @@ test('Brain statics @dss @brain', async ({ page }) => {
   await page.getByRole('img', { name: 'The Angiosarcoma Project data release diagram' }).click();
 });
 
+//Skipping due to the Brain (Dev ENV only!) bug that makes registration impossible since register modal does not appear, only login modal
+//Above is noted by PEPPER-177
+//Brain Dev also seems to have the previous frontend version - there's mention of Brain Cancer Project instead of Brain Tumor Project
 test.fixme('Brain enroll kid on their behalf @dss @brain', async ({ page }) => {
   test.slow();
   await page.goto(BRAIN_BASE_URL!);
diff --git a/playwright-e2e/tests/dsm/tumor-collaborator-sample-id/participant-search.spec.ts b/playwright-e2e/tests/dsm/tumor-collaborator-sample-id/participant-search.spec.ts
index 4dfb7e08be..7bf0c9bdc0 100644
--- a/playwright-e2e/tests/dsm/tumor-collaborator-sample-id/participant-search.spec.ts
+++ b/playwright-e2e/tests/dsm/tumor-collaborator-sample-id/participant-search.spec.ts
@@ -33,7 +33,7 @@ import { StudyName } from 'dsm/navigation';
  */
 test.describe.serial('Tumor Collaborator Sample ID', () => {
   // Some studies are excluded due to lack of the suitable paricipants
-  const studies: StudyName[] = [StudyName.OSTEO2, StudyName.PANCAN, StudyName.MBC, StudyName.BRAIN];
+  const studies: StudyName[] = [StudyName.OSTEO2, StudyName.PANCAN, StudyName.MBC];
 
   for (const study of studies) {
     test(`Search by tumor sample id for non-legacy participant @dsm @${study}`, async ({ page, request }) => {