Overview
Malignant non-epithelial tumors of the ovary are a group of rare cancers that start in the ovary but do NOT come from the surface lining cells (epithelium) that cause the most common type of ovarian cancer. Instead, these tumors grow from other types of cells found in the ovary — such as germ cells (the cells that make eggs) or stromal cells (the supporting tissue cells that produce hormones). The two main types are malignant germ cell tumors (like dysgerminoma, yolk sac tumor, and immature teratoma) and malignant sex cord-stromal tumors (like granulosa cell tumors and Sertoli-Leydig cell tumors). These cancers are sometimes grouped together under the broader term 'non-epithelial ovarian cancer.' These tumors can affect the ovary's normal function and may spread to nearby organs or lymph nodes if not caught early. Because some of these tumors produce hormones, they can cause unusual symptoms like irregular periods, early puberty in children, or signs of hormone imbalance. Common symptoms include pelvic pain, a feeling of fullness or bloating in the belly, a lump that can be felt in the abdomen, and sometimes nausea or changes in menstrual cycles. The good news is that many non-epithelial ovarian cancers — especially germ cell tumors — respond very well to treatment, even when found at a later stage. Treatment usually involves surgery to remove the tumor, often followed by chemotherapy. Many patients, especially younger women and girls, can be cured. Hormone-producing tumors may need additional monitoring for recurrence. Overall, the outlook for many patients with these cancers is better than for the more common epithelial ovarian cancers.
Also known as:
Key symptoms:
Pelvic or lower belly painSwelling or bloating in the abdomenA lump or mass that can be felt in the bellyFeeling full quickly when eatingNausea or vomitingIrregular or missed menstrual periodsAbnormal vaginal bleedingSigns of early puberty in young girls (caused by hormone-producing tumors)Symptoms of too much estrogen or testosterone (such as facial hair, voice changes, or breast tenderness)Unexplained weight lossFatigue or low energyFrequent urination or difficulty urinatingConstipation or changes in bowel habits
Variable
Can be inherited in different ways depending on the underlying gene
Variable
Can begin at different ages, from infancy through adulthood
FDA & Trial Timeline
10 eventsAstellas Pharma Global Development, Inc. — PHASE1, PHASE2
Radiopharm Theranostics, Ltd — PHASE1, PHASE2
Fate Therapeutics — PHASE1
Aromics Therapeutics — PHASE1
Fondazione Policlinico Universitario Agostino Gemelli IRCCS
Eli Lilly and Company — PHASE1
National Cancer Institute (NCI) — PHASE2
Universitaire Ziekenhuizen KU Leuven — PHASE2
AGO Research GmbH — PHASE2
BicycleTx Limited — PHASE1, PHASE2
Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.
Treatments
No FDA-approved treatments are currently listed for Malignant non-epithelial tumor of ovary.
7 clinical trialsare actively recruiting — trials can provide access to cutting-edge therapies.
View clinical trials →Treatment Centers
8 centersBaylor College of Medicine Rare Disease Center ↗
Baylor College of Medicine
📍 Houston, TX
🏥 NORDStanford Medicine Rare Disease Center ↗
Stanford Medicine
📍 Stanford, CA
🔬 UDNNIH Clinical Center Undiagnosed Diseases Program ↗
National Institutes of Health
📍 Bethesda, MD
🔬 UDNUCLA UDN Clinical Site ↗
UCLA Health
📍 Los Angeles, CA
🔬 UDNBaylor College of Medicine UDN Clinical Site ↗
Baylor College of Medicine
📍 Houston, TX
🔬 UDNHarvard/MGH UDN Clinical Site ↗
Massachusetts General Hospital
📍 Boston, MA
🏥 NORDMayo Clinic Center for Individualized Medicine ↗
Mayo Clinic
📍 Rochester, MN
👤 Mayo Clinic Center for Individualized Medicine
🏥 NORDUCLA Rare Disease Day Program ↗
UCLA Health
📍 Los Angeles, CA
Travel Grants
No travel grants are currently matched to Malignant non-epithelial tumor of ovary.
Community
No community posts yet. Be the first to share your experience with Malignant non-epithelial tumor of ovary.
Start the conversation →Latest news about Malignant non-epithelial tumor of ovary
Disease timeline:
New recruiting trial: 177Lu-BetaBart in Patients With Relapsed/Refractory, Locally Advanced Inoperable, or Metastatic Solid Tumors
A new clinical trial is recruiting patients for Malignant non-epithelial tumor of ovary
New recruiting trial: A Study of LY4101174 in Participants With Recurrent, Advanced or Metastatic Solid Tumors
A new clinical trial is recruiting patients for Malignant non-epithelial tumor of ovary
New recruiting trial: A Study of IDE034 in Adult Participants With Locally Advanced/Metastatic Solid Tumors Types
A new clinical trial is recruiting patients for Malignant non-epithelial tumor of ovary
New recruiting trial: Study to Assess Adverse Events and Pharmacokinetics in Adult Participants With Non-Small Cell Lung Cancer (NSCLC), Head and Neck Squamous Cell Carcinoma (HNSCC) and Other Solid Tumors, Receiving Intravenous (IV) Infusion of Azirkitug (ABBV-514) Alone or in Combination With Budigalimab or Bevacizumab
A new clinical trial is recruiting patients for Malignant non-epithelial tumor of ovary
New recruiting trial: FT836 With or Without Chemotherapy and/or Monoclonal Antibodies, in Participants With Advanced Solid Tumors
A new clinical trial is recruiting patients for Malignant non-epithelial tumor of ovary
New recruiting trial: WoO: Window of Opportunity Trial of Olaparib and Durvalumab in Histologically Proven EOC
A new clinical trial is recruiting patients for Malignant non-epithelial tumor of ovary
Caregiver Resources
NORD Caregiver Resources
Support, advocacy, and financial assistance for caregivers of rare disease patients.
Mental Health Support
Rare disease caregiving can be isolating. Connect with counseling and peer support.
Family & Caregiver Grants
Financial assistance programs specifically for caregivers of rare disease patients.
Social Security Disability
Learn how rare disease patients may qualify for SSDI/SSI benefits.
Questions for your doctor
Bring these to your next appointment
- Q1.What specific type of non-epithelial ovarian tumor do I have, and how does that affect my treatment plan?,Is fertility-sparing surgery an option for me, and what are the risks and benefits?,What chemotherapy regimen do you recommend, and what side effects should I expect?,Should I have genetic testing, and what does that mean for my family members?,How will we know if the treatment is working, and what tumor markers will you monitor?,What is the chance that this cancer could come back, and how will we watch for that?,Are there any clinical trials I should consider for my type of tumor?
Common questions about Malignant non-epithelial tumor of ovary
What is Malignant non-epithelial tumor of ovary?
Malignant non-epithelial tumors of the ovary are a group of rare cancers that start in the ovary but do NOT come from the surface lining cells (epithelium) that cause the most common type of ovarian cancer. Instead, these tumors grow from other types of cells found in the ovary — such as germ cells (the cells that make eggs) or stromal cells (the supporting tissue cells that produce hormones). The two main types are malignant germ cell tumors (like dysgerminoma, yolk sac tumor, and immature teratoma) and malignant sex cord-stromal tumors (like granulosa cell tumors and Sertoli-Leydig cell tumo
Are there clinical trials for Malignant non-epithelial tumor of ovary?
Yes — 7 recruiting clinical trials are currently listed for Malignant non-epithelial tumor of ovary on UniteRare. See the clinical trials section on this page for phase, sponsor, and site details sourced from ClinicalTrials.gov.
Which specialists treat Malignant non-epithelial tumor of ovary?
25 specialists and care centers treating Malignant non-epithelial tumor of ovary are listed on UniteRare, sourced from ClinicalTrials.gov principal investigators, published research, and the NPPES NPI registry.