Rare Cancers
Rare Cancers
13 moderately complex types including GIST & Mesothelioma.
13 types covered
Cancer answers,
between appointments
A companion for cancer patients and the families carrying them. Ask about treatment, food, side effects, insurance, or just getting through the week, in the language you actually think in.
Ask in writing in 18 languages.trained by oncologists and health care professionals
18languages you can write in
-cancer types covered
-hospitals mapped
<12hexpert second opinions
The problem
The questions don't arrive during clinic hours.
Tuesday at Memorial Hermann in Houston: twenty minutes, then the oncologist is gone until Thursday. At 2:14 a.m. in Sugar Land, her daughter has the portal note open on the guest-room floor, googling what her mother can eat on FOLFOX. The first results are NHS pages.
The attending already went home. The person who has to decide about dinner, and about a fever of 101, is the daughter who drove.
“She's on FOLFOX this cycle. What do I actually feed her, and when is a fever an ER visit?”Sugar Land, Texas. 2:14 a.m., two nights after infusion at Memorial Hermann.
How it works
Type a question. That's the whole interface.
No forms, no menus. Writing already works in 18 languages.
Ask in your own words
Write the way you speak, in any of 18 languages. Keep chemotherapy and platelets in English. English is the default for US care.
Get a short, human answer
Two or three sentences, spoken back the way someone sitting across the table would explain it. Short, human, and easy to take into clinic.
She remembers
The cancer type, the regimen, which cycle you're on, your city, whether you're the patient or the son. Come back next week and you carry on. Nobody re-explains their mother's diagnosis to a machine twice.
Languages
Ask in writing in 18 languages.
English is the default for US care. Type in any of 18 languages below. Voice replies today in English, Hindi, Hinglish, and Marathi.
हिंदीमराठीதமிழ்తెలుగుಕನ್ನಡবাংলাગુજરાતીEnglishEspañolFrançaisDeutschItalianoNederlandsPortuguêsРусский日本語한국어中文
Coverage
Cancer types, and the whole life around them.
Including the rare ones, where families usually get the least help and need the most.
14Ultra-rare: DIPG, ATRT, SCCOHT, BPDCN
12Very rare: chordoma, angiosarcoma, uveal melanoma
13Rare: GIST, mesothelioma, Ewing sarcoma
22Common and less common: breast, lung, colorectal, myeloma
Treatment and transplant
Surgery, chemotherapy, radiation, targeted and immunotherapy. Bone marrow and stem cell transplant in full: donor matching, conditioning, engraftment, the isolation weeks, GVHD, and life afterwards. CAR-T, clinical trials, genomic testing.
The parts nobody warns you about
What to eat when nothing tastes right. Whether it's safe to travel between cycles. Going back to work. Intimacy and fertility. Hair, skin, stoma and lymphoedema care. Fear of recurrence at 3am. Caregivers who haven't slept.
Money and logistics
US insurance language first: Medicare, Medicaid, commercial plans. Then hospital matching, cost estimates, and India schemes including Ayushman Bharat when that is the question.
Rare cancers, without the shrug
DIPG, ATRT, chordoma, GIST and the rest that barely show up in waiting-room pamphlets. Plain words for the biology, what questions to take to the specialist, and how to look for a trial without false hope.
For the person next to them
The spouse in the waiting room, the adult child on the portal, the friend driving to radiation. How to tell a child, what to watch for at home, when to push for a second opinion, and how to keep yourself standing.
Scope of Care
Focused entirely on oncology and supporting your treatment pathway. We specialize in explaining cancer care and coordinating closely with your treating oncologists.
Our services
Complete cancer care, beyond the conversation
Vani answers the questions. ByOnco matches you to US hospitals, USD cost tables, rare-cancer pathways, second opinions, and care packages.
Find Hospitals
Find Hospitals
Match NCI-designated US centers by cancer type and city, from Memorial Sloan Kettering in New York City to MD Anderson in Houston.
getbyonco.com/find-hospitals
byoncoHomeHospitalsCareProfile
Hospital matches
WITHOUT MATCHING
generic searchBest cancer hospital near me
city listingsEvery center, no filter by type
BYONCO MATCHES
Memorial Sloan Kettering Cancer CenterNew York City · matched to diagnosis
MD Anderson Cancer CenterHouston · NCI comprehensive
Mayo Clinic Cancer CenterRochester, MN · verified profile
getbyonco.com/get-matched
byoncoHomeHospitalsCareProfile
Intake
Tell us your needs
Triple-negative breast
Houston, Texas
UnitedHealthcare
Staging this week
How ByOnco works
How ByOnco Works
From matching to insurance help. Here is how we guide your cancer journey.
Specialized care
Rare and ultra-rare cancer expertise
Ultra-Rare Cancers
14 ultra-rare types including DIPG, ATRT, NUT carcinoma. Pediatric tumors, rare carcinomas & aggressive sarcomas.
Very Rare Cancers
Very Rare Cancers
12 high-risk types including Chordoma, Merkel Cell & Angiosarcoma.
12 types covered
Ultra-Rare Cancers
Ultra-Rare Cancers
14 ultra-rare types including DIPG, ATRT, NUT carcinoma. Pediatric tumors, rare carcinomas & aggressive sarcomas.
14 types covered
We specialize in - rare cancer types.
Built by a world-class team
Built by people who understand your pain, powered by people who can solve it
Safety
Built by people who assume it will be used at 3am, by someone frightened.
Engineered with absolute safety and medical precision at its core.
Red flags
Emergencies and acute issues are flagged instantly. We prioritize clinical alerts for symptoms like neutropenic fever, severe breathlessness, or heavy bleeding, urging immediate care.
Verifiable Data
All hospital locations, providers, prices, and clinical trial parameters are fully verified against our curated databases. Cost estimates use transparent, deterministic calculation engines.
Clinical Support
ByOnco provides clear explanations of medical terminology, diagnostic definitions, and clinical reports to help facilitate a productive dialogue with your oncologist.
Distress
We connect patients and caregivers with official, verified crisis response lines and mental health professionals immediately when support is needed.
Privacy
Your memory is yours. Everything Vani knows is visible in the app, editable, and erasable in one tap.
Pricing
Priced below a single US oncology visit.
Two free questions. Then $19.99 a month, marked down from $39.99.
Free
Try it first
$0
- 2 questions, no card
- All 18 languages
- Trained by experienced oncologists
Most families choose this
ByOnco PRO
Patients and families
$19.99/mo$39.99
- Unlimited questions in 18 languages
- US hospital and NCI-center matching
- Expert written second opinions (target within 12 hours)
- Cost estimates and insurance framing
- Check-ins, bookmarks, and analysis
Save 25%
ByOnco PRO Yearly
Best for ongoing care
$14.99/mo$19.99
Billed $179.88 once a year ($14.99/mo)
- Everything in ByOnco PRO
- Unlimited questions in 18 languages
- US hospital and NCI-center matching
- Expert written second opinions (target within 12 hours)
- Save 25% vs monthly · cancel anytime
Lifetime
One payment
$999
- Everything in PRO, forever
- No renewals
- For families in this for years
Cancer centers: Hospital SaaS at $10,000/month for international referrals, bed and queue analytics, conversion tracking, EMR integration. Request a demo →
Questions
The things people ask us first.
Is this a replacement for an oncologist?
No, and it's built so it can't drift into becoming one. Vani never diagnoses, never gives a dose, and never tells anyone to start, stop or change a treatment. She answers the questions that pile up between US clinic visits, so the twenty minutes with your oncologist get spent on what actually needs them.
How do you stop it from making things up?
Hospitals, doctors, prices, trials and wait times are the highest-risk things a model can invent, so she is barred from producing any of them from memory. Hospital names are grounded against ByOnco's verified directory, NCI-designated US centers first. Costs come from a deterministic calculator. Where she doesn't know, she says so.
What happens to my medical information?
Everything Vani remembers about you is visible in the app, editable line by line, and erasable in one tap. We do not sell health data. US users are served under a HIPAA-ready posture; India users are also covered under the DPDP Act.
Do you only work in English?
Ask in writing in 18 languages. English is the default for the US.
Who is this for?
Patients and caregivers. The person sitting in an infusion chair, the daughter driving to the hospital, the spouse looking something up at 2am. If cancer is part of your life, this is for you.
Nobody should have to face this between Thursday and the next portal message.
Start with two free questions. It takes about a minute.
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Vani by ByOnco. Cancer answers between appointments.
by byonco