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Nonprofit · EIN 75-2816066

MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC

Tax-exempt · WASHINGTON, DC 20006

Financials

$1.5M$1.5M2023$2M$1.4M2024$2.5M$1.5M2025
Revenue Expenses · by fiscal year end
Financials of MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$2,531,496$1,542,060$989,436$11,531,357$457,681$11,073,676
December 31, 2024990$2,018,146$1,403,070$615,076$10,638,848$554,608$10,084,240
December 31, 2023990$1,546,869$1,532,223$14,646$9,971,454$546,462$9,424,992
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$1,413,858
Program service revenue
$616,120
Investment income
$495,183
Other revenue
$6,335

Expenses

Grants and similar amounts paid
$411,047
Compensation of officers, directors and key employees
$282,777
Other salaries and wages
$257,862
Salaries, compensation and benefits (total)
$728,009
Professional fundraising fees
$0
Legal fees
$4,611
Accounting fees
$58,250
Travel
$17,110
Depreciation
$1,005
Program services (functional)
$1,169,993
Management and general (functional)
$144,320
Fundraising (functional)
$227,747

Balance sheet and other

Total assets, start of year
$10,638,848
Total assets, end of year
$11,531,357
Total liabilities, end of year
$457,681
Net assets, end of year
$11,073,676
Land, buildings and equipment
$1,693
Publicly traded securities
$8,831,022
Net assets without donor restrictions
$11,073,676
Gross receipts
$2,531,496
Employees
6
Volunteers
35
Year formed
1999
State of legal domicile
DC

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
BRIAN LEPACEKEXECUTIVE DIRECTOR40$153,217
JULIE WHITEPATIENT SRVS DIR40$138,975
MARJORIE G ZAUDERERCHAIR
Trustee or director, Officer
1$0
R TAYLOR RIPLEYVICE CHAIR
Trustee or director, Officer
1$0
DARCIENA CHRISTELTreasurer
Trustee or director, Officer
1$0
KEITH CENGELSecretary
Trustee or director, Officer
1$0
JESSICA BLACKFORD-CLEETONBoard Member
Trustee or director
1$0
CHERYL BURNERBoard Member
Trustee or director
1$0
JASON FOSTERBoard Member
Trustee or director
1$0
DANIEL STERMANBoard Member
Trustee or director
1$0
JAMES STEVENSONBoard Member
Trustee or director
1$0
Bill ZieglerBoard Member
Trustee or director
1$0
990 for the year ended December 31, 2024: 15 people
NameTitleHours / weekCompensationOther / benefits
JULIE WHITEHIGHEST COMPENSATED EMPLOYEE
Highest-paid employee
40$127,500$5,419
BRIAN T LEPACEKEXECUTIVE DIRECTOR
Officer
40$53,910$0
MARJORIE G ZAUDERER MD MS FACPCHAIR
Trustee or director, Officer
1$0$0
DARCIENA ANDERSON CHRISTELTREASURER
Trustee or director, Officer
1$0$0
R TAYLOR RIPLEY MDVICE CHAIR
Trustee or director, Officer
1$0$0
KEITH CENGEL MD PHDSECRETARY
Trustee or director
1$0$0
JASON M FOSTER MDDIRECTOR
Trustee or director
1$0$0
AARON S MANSFIELD MDDIRECTOR (STEPPED DOWN IN 2024)
Trustee or director
1$0$0
SANJAY POPAT PHDDIRECTOR (STEPPED DOWN IN 2024)
Trustee or director
1$0$0
BORIS SEPESI MDDIRECTOR (MEMBERSHIP PAUSED IN 2024)
Trustee or director
1$0$0
DANIEL STERMAN MDDIRECTOR
Trustee or director
1$0$0
JAMES STEVENSON MDDIRECTOR
Trustee or director
1$0$0
WILLIAM N ZIEGLERDIRECTOR
Trustee or director
1$0$0
CHERYL BRUNER ESQDIRECTOR
Trustee or director
1$0$0
JESSICA BLACKFORD-CLEETONDIRECTOR
Trustee or director
1$0$0
990 for the year ended December 31, 2023: 15 people
NameTitleHours / weekCompensationOther / benefits
MAJA BELAMARICCOO
Officer
40$134,162$7,095
JULIE POWERSEXECUTIVE DIRECTOR
Officer
40$120,056$5,670
MARJORIE G ZAUDERER MD MS FACPCHAIR
Trustee or director, Officer
1$0$0
DARCIENA ANDERSON CHRISTELTREASURER
Trustee or director, Officer
1$0$0
R TAYLOR RIPLEY MDSECRETARY
Trustee or director, Officer
1$0$0
KEITH CENGEL MD PHDDIRECTOR
Trustee or director
1$0$0
JASON M FOSTER MDDIRECTOR
Trustee or director
1$0$0
AARON S MANSFIELD MDDIRECTOR
Trustee or director
1$0$0
SANJAY POPAT PHDDIRECTOR
Trustee or director
1$0$0
BORIS SEPESI MDDIRECTOR
Trustee or director
1$0$0
DANIEL STERMAN MDDIRECTOR
Trustee or director
1$0$0
JAMES STEVENSON MDDIRECTOR
Trustee or director
1$0$0
WILLIAM N ZIEGLERDIRECTOR
Trustee or director
1$0$0
CHERYL BRUNER ESQDIRECTOR
Trustee or director
1$0$0
JESSICA BLACKFORD-CLEETONDIRECTOR
Trustee or director
1$0$0

Address and contacts

Address (IRS master file)
1717 K ST NW STE 900, WASHINGTON, DC 20006-5349
In care of
% MARY E HESDORFFER
Principal officer (990 for 2025)
DARCIENA CHRISTEL, 1717 K STREET NW 900, WASHINGTON, DC 20006
Signed the 990
DARCIENA CHRISTEL, Treasurer
Phone
(877) 363-6376
Return prepared by
HYDE & ASSOCIATES

Mission

TO OFFER HOPE AND SUPPORT TO PATIENTS AND FAMILIES DEALING WITH MESOTHELIOMA. THIS IS ACCOMPLISHED BY EDUCATING PATIENTS AND FAMILIES ABOUT THE DISEASE, HELPING THEM OBTAIN THE MOST UP-TO-DATE INFORMATION ON TREATMENT OPTIONS, CONNECTING THEM WITH MESOTHELIOMA TREATMENT SPECIALISTS, AND PROVIDING ASSISTANCE, EMOTIONAL SUPPORT, AND COMMUNITY WITH OTHERS. THE FOUNDATION PROVIDES FUNDING THE HIGHEST QUALITY AND MOST PROMISING MESOTHELIOMA RESEARCH PROJECTS WORLDWIDE THROUGH RIGOROUS PEER-REVIEW. THE FOUNDATION ALSO WORKS TO RAISE AWARENESS OF THE DISEASE, AND ADVOCATES THAT THE PUBLIC AND PRIVATE SECTORS PARTNER IN THE EFFORT TO CURE IT BY DIRECTING THE RESOURCES NEEDED TO STOP THIS GLOBAL TRAGEDY

990 for the year ended December 31, 2025

Program accomplishments

  • RESEARCH THE MESOTHELIOMA APPLIED RESEARCH FOUNDATION, INC. FUNDS THE MOST PROMISING MESOTHELIOMA RESEARCH PROJECTS GLOBALLY, AS DETERMINED BY A RIGOROUS PEER-REVIEW PROCESS VIA THE FOUNDATIONS SCIENCE ADVISORY BOARD AND APPROVED BY THE BOARD O DIRECTORS. THIS PROCESS IS BASED UPON THE DEPARTMENT OF DEFENCE CDMRP. BASED UPON THE NATIONAL CANCER INSTITUTE.
    Expenses $584,997 · grants $300,000
  • EDUCATION SUPPORT AND SYMPOSIUM PATIENT SUPPORT SERVICES OFFERED BY THE MESOTHELIOMA APPLIED RESEARCH FOUNDATION, INC. INCLUDE PERSONALIZED CONSULTATIONS AND GUIDANCE THROUGH TREATMENT WITH MESOTHELIOMA EXPERTS. THIS INCLUDES PROVIDING PATIENTS WITH INFORMATION ABOUT TREATMENT OPTIONS, CONNECTING THEM WITH MESOTHELIOMA TREATMENT SPECIALISTS WHEN NEEDED, AND FACILITATING ACCESS TO THE FOUNDATIONS SUPPORT GROUPS.
    Expenses $350,996 · grants $18,353
  • ADVOCACY THE MESOTHELIOMA APPLIED RESEARCH FOUNDATION, INC. ADVOCATES ON BEHALF OF ITS PATIENTS AND FAMILIES FOR INCREASED FUNDING OF MESOTHELIOMA RESEARCH THROUGH FEDERAL INVESTMENT.
    Expenses $234,000 · grants $92,695

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
75-2816066
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2000
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$11,531,357
Income (IRS master file)
$2,531,496

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$2,531,496$1,542,060$11,531,357XML
990December 2024$2,018,146$1,403,070$10,638,848XML
990December 2023$1,546,869$1,532,223$9,971,454XML
990December 2022$1,693,216$1,190,526$9,449,879IRS
990December 2021–––IRS
990December 2020–––IRS
990December 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 75-2816066).

Questions about MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC

What is the EIN of MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC?
The employer identification number (EIN) of MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC is 75-2816066.
Is MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2000.
Are donations to MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2025.
Who is the principal officer of MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC?
The 990 for the year ended December 31, 2025 names DARCIENA CHRISTEL.
Who are the officers and directors of MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC?
The 990 for the year ended December 31, 2025 lists 12 people; 2 received compensation from the organization, the highest $153,217 (BRIAN LEPACEK, EXECUTIVE DIRECTOR).
How much revenue does MESOTHELIOMA APPLIED RESEARCH FOUNDATION INC have?
On its 990 for the year ended December 31, 2025 it reported revenue of $2,531,496, expenses of $1,542,060 and total assets of $11,531,357 at year end.

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