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Pay vs Performance Disclosure - USD ($)
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pay vs Performance Disclosure      
Pay vs Performance Disclosure, Table
Year
​ ​
Summary
Compensation
Table Total
for PEO(1)
​ ​
Compensation
Actually Paid
to PEO(2)(3)
​ ​
Average
Summary
Compensation
Table Total
for Non-PEO
Named
Executive Officers(1)
​ ​
Average
Compensation
Actually Paid
to Non-PEO
Named
Executive
Officers(2)(3)
​ ​
Value of
Initial Fixed
$100
Investment
Based on
Total
Shareholder
Return(4)
​ ​
Net
Income/(Loss)(5)
(in thousands)
​
2024
​ ​ ​ ​ 6,604,416 ​ ​ ​ ​ ​ 8,962,336 ​ ​ ​ ​ ​ 2,464,324 ​ ​ ​ ​ ​ 3,636,115 ​ ​ ​ ​ ​ 166 ​ ​ ​ ​ ​ (94,260) ​ ​
2023
​ ​ ​ ​ 2,955,504 ​ ​ ​ ​ ​ 2,074,733 ​ ​ ​ ​ ​ 1,338,174 ​ ​ ​ ​ ​ 386,006 ​ ​ ​ ​ ​ 60 ​ ​ ​ ​ ​ (72,891) ​ ​
2022
​ ​ ​ ​ 1,722,417 ​ ​ ​ ​ ​ 4,613,529 ​ ​ ​ ​ ​ 847,684 ​ ​ ​ ​ ​ 1,842,803 ​ ​ ​ ​ ​ 116 ​ ​ ​ ​ ​ (51,403) ​ ​
​
(1)
Our PEO for 2024, 2023 and 2022 was Jill Milne, our current Chief Executive Officer and President. Our Other NEOs for 2024 were Christopher Morabito, our Chief Medical Officer, and Benjamin Harshbarger, our Chief Legal Officer; our Other NEOs for 2023 were Noah Clauser, our Chief Financial Officer, and Christopher Morabito; our Other NEOs for 2022 were Andrew Nichols, our former Chief Scientific Officer, and Benjamin Harshbarger.
​
(2)
The following table describes the adjustments, each of which is prescribed by SEC rule, to calculate the CAP Amounts from the SCT Amounts. The SCT Amounts and the CAP Amounts do not reflect the actual amount of compensation earned by or paid to our executives during the applicable years, but rather are amounts determined in accordance with Item 402 of Regulation S-K under the Exchange Act.
​
​ ​ ​
2024
​ ​
2023
​ ​
2022
​
Adjustments
​ ​
PEO
​ ​
Other NEOs*
​ ​
PEO
​ ​
Other NEOs*
​ ​
PEO
​ ​
Other NEOs*
​
SCT Amounts
​ ​ ​ ​ 6,604,416 ​ ​ ​ ​ ​ 2,464,324 ​ ​ ​ ​ ​ 2,955,504 ​ ​ ​ ​ ​ 1,338,174 ​ ​ ​ ​ ​ 1,722,417 ​ ​ ​ ​ ​ 847,684 ​ ​
Adjustments for stock and option
awards:
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
(Subtraction): Aggregate value for
option awards included in SCT
Amounts for the covered fiscal
year
​ ​ ​ ​ (5,637,078) ​ ​ ​ ​ ​ (1,789,892) ​ ​ ​ ​ ​ (2,016,728) ​ ​ ​ ​ ​ (696,688) ​ ​ ​ ​ ​ (793,900) ​ ​ ​ ​ ​ (223,920) ​ ​
Addition: Fair value at year end
of awards granted during the
covered fiscal year that are
outstanding and unvested at the
covered fiscal year end
​ ​ ​ ​ 4,955,819 ​ ​ ​ ​ ​ 1,964,979 ​ ​ ​ ​ ​ 1,102,811 ​ ​ ​ ​ ​ 380,971 ​ ​ ​ ​ ​ 2,221,123 ​ ​ ​ ​ ​ 754,612 ​ ​
Addition (Subtraction): Year-over-
year change in fair value of
awards granted in any prior
fiscal year that were
outstanding and unvested at the
covered fiscal year end
​ ​ ​ ​ 1,140,801 ​ ​ ​ ​ ​ 398,648 ​ ​ ​ ​ ​ (1,020,128) ​ ​ ​ ​ ​ (975,208) ​ ​ ​ ​ ​ 1,161,660 ​ ​ ​ ​ ​ 383,316 ​ ​
Addition: Vesting date fair value of awards granted and vesting during the covered fiscal year
​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​
Addition: Change as of the
vesting date (from the end of
the prior fiscal year) in fair
value of awards granted in any
prior fiscal year for which
vesting conditions were
satisfied during the covered
fiscal year
​ ​ ​ ​ 1,898,378 ​ ​ ​ ​ ​ 598,056 ​ ​ ​ ​ ​ 1,053,274 ​ ​ ​ ​ ​ 338,757 ​ ​ ​ ​ ​ 302,229 ​ ​ ​ ​ ​ 81,111 ​ ​
(Subtraction): Fair value at end of
prior year of awards granted in
any prior fiscal year that fail to
meet the applicable vesting
conditions during the covered
fiscal year
​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​
CAP Amounts (as calculated)
​ ​ ​ ​ 8,962,336 ​ ​ ​ ​ ​ 3,636,115 ​ ​ ​ ​ ​ 2,074,733 ​ ​ ​ ​ ​ 386,006 ​ ​ ​ ​ ​ 4,613,529 ​ ​ ​ ​ ​ 1,842,803 ​ ​
​
*
Amounts presented are averages for our Other NEOs in each respective year.
​
(3)
The material assumptions used to calculate fair values at December 31, 2024, December 31, 2023 and December 31, 2022 differed from those used to calculate the fair values at the time of grant as reflected in the SCT Amounts:
​
(a)
a weighted average exercise price was used; and (b) an average expected term of the remaining contractual life was used.
​
(4)
Total Shareholder Return illustrates the value, as of the last day of the indicated fiscal year, of an investment of $100 in our common stock on December 31, 2021.
​
(5)
Reflects net losses in all three years, as calculated in accordance with GAAP.
​
    
Named Executive Officers, Footnote
(1)
Our PEO for 2024, 2023 and 2022 was Jill Milne, our current Chief Executive Officer and President. Our Other NEOs for 2024 were Christopher Morabito, our Chief Medical Officer, and Benjamin Harshbarger, our Chief Legal Officer; our Other NEOs for 2023 were Noah Clauser, our Chief Financial Officer, and Christopher Morabito; our Other NEOs for 2022 were Andrew Nichols, our former Chief Scientific Officer, and Benjamin Harshbarger.
   
PEO Total Compensation Amount $ 6,604,416 $ 2,955,504 $ 1,722,417
PEO Actually Paid Compensation Amount $ 8,962,336 2,074,733 4,613,529
Adjustment To PEO Compensation, Footnote
(2)
The following table describes the adjustments, each of which is prescribed by SEC rule, to calculate the CAP Amounts from the SCT Amounts. The SCT Amounts and the CAP Amounts do not reflect the actual amount of compensation earned by or paid to our executives during the applicable years, but rather are amounts determined in accordance with Item 402 of Regulation S-K under the Exchange Act.
​
​ ​ ​
2024
​ ​
2023
​ ​
2022
​
Adjustments
​ ​
PEO
​ ​
Other NEOs*
​ ​
PEO
​ ​
Other NEOs*
​ ​
PEO
​ ​
Other NEOs*
​
SCT Amounts
​ ​ ​ ​ 6,604,416 ​ ​ ​ ​ ​ 2,464,324 ​ ​ ​ ​ ​ 2,955,504 ​ ​ ​ ​ ​ 1,338,174 ​ ​ ​ ​ ​ 1,722,417 ​ ​ ​ ​ ​ 847,684 ​ ​
Adjustments for stock and option
awards:
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
(Subtraction): Aggregate value for
option awards included in SCT
Amounts for the covered fiscal
year
​ ​ ​ ​ (5,637,078) ​ ​ ​ ​ ​ (1,789,892) ​ ​ ​ ​ ​ (2,016,728) ​ ​ ​ ​ ​ (696,688) ​ ​ ​ ​ ​ (793,900) ​ ​ ​ ​ ​ (223,920) ​ ​
Addition: Fair value at year end
of awards granted during the
covered fiscal year that are
outstanding and unvested at the
covered fiscal year end
​ ​ ​ ​ 4,955,819 ​ ​ ​ ​ ​ 1,964,979 ​ ​ ​ ​ ​ 1,102,811 ​ ​ ​ ​ ​ 380,971 ​ ​ ​ ​ ​ 2,221,123 ​ ​ ​ ​ ​ 754,612 ​ ​
Addition (Subtraction): Year-over-
year change in fair value of
awards granted in any prior
fiscal year that were
outstanding and unvested at the
covered fiscal year end
​ ​ ​ ​ 1,140,801 ​ ​ ​ ​ ​ 398,648 ​ ​ ​ ​ ​ (1,020,128) ​ ​ ​ ​ ​ (975,208) ​ ​ ​ ​ ​ 1,161,660 ​ ​ ​ ​ ​ 383,316 ​ ​
Addition: Vesting date fair value of awards granted and vesting during the covered fiscal year
​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​
Addition: Change as of the
vesting date (from the end of
the prior fiscal year) in fair
value of awards granted in any
prior fiscal year for which
vesting conditions were
satisfied during the covered
fiscal year
​ ​ ​ ​ 1,898,378 ​ ​ ​ ​ ​ 598,056 ​ ​ ​ ​ ​ 1,053,274 ​ ​ ​ ​ ​ 338,757 ​ ​ ​ ​ ​ 302,229 ​ ​ ​ ​ ​ 81,111 ​ ​
(Subtraction): Fair value at end of
prior year of awards granted in
any prior fiscal year that fail to
meet the applicable vesting
conditions during the covered
fiscal year
​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​
CAP Amounts (as calculated)
​ ​ ​ ​ 8,962,336 ​ ​ ​ ​ ​ 3,636,115 ​ ​ ​ ​ ​ 2,074,733 ​ ​ ​ ​ ​ 386,006 ​ ​ ​ ​ ​ 4,613,529 ​ ​ ​ ​ ​ 1,842,803 ​ ​
*
Amounts presented are averages for our Other NEOs in each respective year.
   
Non-PEO NEO Average Total Compensation Amount $ 2,464,324 1,338,174 847,684
Non-PEO NEO Average Compensation Actually Paid Amount $ 3,636,115 386,006 1,842,803
Adjustment to Non-PEO NEO Compensation Footnote
(2)
The following table describes the adjustments, each of which is prescribed by SEC rule, to calculate the CAP Amounts from the SCT Amounts. The SCT Amounts and the CAP Amounts do not reflect the actual amount of compensation earned by or paid to our executives during the applicable years, but rather are amounts determined in accordance with Item 402 of Regulation S-K under the Exchange Act.
​
​ ​ ​
2024
​ ​
2023
​ ​
2022
​
Adjustments
​ ​
PEO
​ ​
Other NEOs*
​ ​
PEO
​ ​
Other NEOs*
​ ​
PEO
​ ​
Other NEOs*
​
SCT Amounts
​ ​ ​ ​ 6,604,416 ​ ​ ​ ​ ​ 2,464,324 ​ ​ ​ ​ ​ 2,955,504 ​ ​ ​ ​ ​ 1,338,174 ​ ​ ​ ​ ​ 1,722,417 ​ ​ ​ ​ ​ 847,684 ​ ​
Adjustments for stock and option
awards:
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
(Subtraction): Aggregate value for
option awards included in SCT
Amounts for the covered fiscal
year
​ ​ ​ ​ (5,637,078) ​ ​ ​ ​ ​ (1,789,892) ​ ​ ​ ​ ​ (2,016,728) ​ ​ ​ ​ ​ (696,688) ​ ​ ​ ​ ​ (793,900) ​ ​ ​ ​ ​ (223,920) ​ ​
Addition: Fair value at year end
of awards granted during the
covered fiscal year that are
outstanding and unvested at the
covered fiscal year end
​ ​ ​ ​ 4,955,819 ​ ​ ​ ​ ​ 1,964,979 ​ ​ ​ ​ ​ 1,102,811 ​ ​ ​ ​ ​ 380,971 ​ ​ ​ ​ ​ 2,221,123 ​ ​ ​ ​ ​ 754,612 ​ ​
Addition (Subtraction): Year-over-
year change in fair value of
awards granted in any prior
fiscal year that were
outstanding and unvested at the
covered fiscal year end
​ ​ ​ ​ 1,140,801 ​ ​ ​ ​ ​ 398,648 ​ ​ ​ ​ ​ (1,020,128) ​ ​ ​ ​ ​ (975,208) ​ ​ ​ ​ ​ 1,161,660 ​ ​ ​ ​ ​ 383,316 ​ ​
Addition: Vesting date fair value of awards granted and vesting during the covered fiscal year
​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​
Addition: Change as of the
vesting date (from the end of
the prior fiscal year) in fair
value of awards granted in any
prior fiscal year for which
vesting conditions were
satisfied during the covered
fiscal year
​ ​ ​ ​ 1,898,378 ​ ​ ​ ​ ​ 598,056 ​ ​ ​ ​ ​ 1,053,274 ​ ​ ​ ​ ​ 338,757 ​ ​ ​ ​ ​ 302,229 ​ ​ ​ ​ ​ 81,111 ​ ​
(Subtraction): Fair value at end of
prior year of awards granted in
any prior fiscal year that fail to
meet the applicable vesting
conditions during the covered
fiscal year
​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​ ​ ​ ​ — ​ ​
CAP Amounts (as calculated)
​ ​ ​ ​ 8,962,336 ​ ​ ​ ​ ​ 3,636,115 ​ ​ ​ ​ ​ 2,074,733 ​ ​ ​ ​ ​ 386,006 ​ ​ ​ ​ ​ 4,613,529 ​ ​ ​ ​ ​ 1,842,803 ​ ​
*
Amounts presented are averages for our Other NEOs in each respective year.
   
Compensation Actually Paid vs. Total Shareholder Return
[MISSING IMAGE: bc_capandtsr-4c.jpg]
   
Compensation Actually Paid vs. Net Income
[MISSING IMAGE: bc_capandnetincome-4c.jpg]
   
Total Shareholder Return Amount $ 166 60 116
Net Income (Loss) $ (94,260,000) (72,891,000) (51,403,000)
PEO Name Jill Milne    
PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount $ (5,637,078) (2,016,728) (793,900)
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount 4,955,819 1,102,811 2,221,123
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount 1,140,801 (1,020,128) 1,161,660
PEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount 1,898,378 1,053,274 302,229
PEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount
Non-PEO NEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount (1,789,892) (696,688) (223,920)
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount 1,964,979 380,971 754,612
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount 398,648 (975,208) 383,316
Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount 598,056 338,757 81,111
Non-PEO NEO | Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year      
Pay vs Performance Disclosure      
Adjustment to Compensation, Amount