Our 24/7 cancer helpline provides information and answers for people dealing with cancer. We can connect you with trained cancer information specialists who will answer questions about a cancer diagnosis and provide guidance and a compassionate ear.
Chat live online
Select the Live Chat button at the bottom of the page
Our highly trained specialists are available 24/7 via phone and on weekdays can assist through online chat. We connect patients, caregivers, and family members with essential services and resources at every step of their cancer journey. Ask us how you can get involved and support the fight against cancer. Some of the topics we can assist with include:
- Referrals to patient-related programs or resources
- Donations, website, or event-related assistance
- Tobacco-related topics
- Volunteer opportunities
- Cancer Information
For medical questions, we encourage you to review our information with your doctor.
- Reasons to Quit Smoking
- Health Benefits of Quitting Smoking Over Time
- Benefits of Quitting Tobacco If You Have Cancer
- Making a Plan to Quit and Preparing for Your Quit Day
- Quitting Smoking or Smokeless Tobacco
- Quitting E-cigarettes (Vapes, Vape Pens)
- Nicotine Replacement Therapy to Help You Quit Tobacco
- Prescription Medicines to Help You Quit Tobacco
- Dealing with the Mental Part of Tobacco Addiction
- Are There Other Ways to Quit Tobacco?
- Staying Tobacco-free After You Quit
- Help for Cravings and Tough Situations While You're Quitting Tobacco
- Talking With Your Cancer Care Team About Tobacco Use
- How to Help Someone Quit Smoking
- Why People Start Smoking and Why It’s Hard to Stop
- Harmful Chemicals in Tobacco Products
- Is Any Type of Tobacco Product Safe?
- Keeping Your Children Tobacco-free
- Empowered to Quit
- ACS Cancer Risk 360
Li-Fraumeni Syndrome (LFS)
Li-Fraumeni (LFS) is a rare inherited syndrome that can lead to an increased risk of several types of cancer. It is also called the sarcoma, breast, leukemia, and adrenal gland (SBLA) cancer syndrome. Li-Fraumeni syndrome is hereditary, meaning that it is caused by a change (mutation) in a gene that can be passed down in families.
People with Li-Fraumeni syndrome (LFS) have an increased risk of several types of cancer, including:
- Osteosarcoma
- Soft-tissue sarcomas
- Leukemia
- Brain (central nervous system) tumors
- Adrenal cortex
- Breast
- Gastrointestinal cancers
- Melanoma
These cancers often develop in relatively young adults or even children.
What causes Li-Fraumeni syndrome?
This syndrome is most often caused by an inherited mutation in the TP53 gene, which is a tumor suppressor gene. A normal TP53 gene makes a protein that helps stop abnormal cells from growing. When a mutation occurs in the TP53 gene, abnormal cells can divide uncontrollably and become cancer.
How is Li-Fraumeni syndrome diagnosed?
Li-Fraumeni syndrome (LFS) is often diagnosed when a person suspected of having the syndrome has genetic testing to look for an inherited TP53 gene mutation in their cells. However, not everyone with Li-Fraumeni syndrome is found to have a TP53 mutation.
LFS is usually considered in people who are diagnosed with a sarcoma when they are younger than 45 years old, or who have family members diagnosed with any cancer when they are younger than 45 years old. These people are often advised to get genetic counseling, and possibly genetic testing.
To learn more about genetic counseling and testing, see Genetic Testing for Cancer Risk.
Why is it important to know if you have Li-Fraumeni syndrome?
People with Li-Fraumeni syndrome (LFS) have a high risk of developing some cancers during their lifetime (listed above). Some people might even develop more than one type of cancer. There are several reasons it might be important to know if you have Li-Fraumeni syndrome.
It might let you take steps to lower your cancer risk or find it early
- Ask your doctor if you should start getting cancer screenings at an earlier age, if you should be screened more often than normal, and if you should get certain kinds of screening tests.
- There are two different screening schedules for people with Li-Fraumeni syndrome: One for children, and another for adults. For children, the screenings are more focused on looking for adrenocortical carcinomas, brain, soft tissue, and bone cancers. For adults, the screenings focus more on looking for breast, brain, soft tissue, bone, skin, and gastrointestinal (especially upper) cancers.
- People with Li-Fraumeni syndrome have a higher risk of getting cancer from radiation exposure, so doctors advise them not to get any imaging tests or treatments that include any form of radiation.
- Ask your doctor if there are other things you can do to lower your cancer risk, such as staying at a healthy weight, being active, and avoiding or limiting alcohol.
It might affect your family members
If you have a TP53 mutation, some of your blood-related family members might have it, too. Talk to your close relatives (parents, siblings, and children) about getting tested for Li-Fraumeni. If they prefer to not get tested, they may want to start screening for certain cancers early or take other precautions to lower their risk of cancer.
Developed by the American Cancer Society medical and editorial content team with medical review and contribution by the American Society of Clinical Oncology (ASCO).
Katona BW, Powers J, McKenna DB, Long JM, Le AN, Hausler R, Zelley K, Jennings S, Domchek SM, Nathanson KL, MacFarland SP, Maxwell KN. Upper Gastrointestinal Cancer Risk and Surveillance Outcomes in Li-Fraumeni Syndrome. Am J Gastroenterol. 2020 Dec;115(12):2095-2097. doi: 10.14309/ajg.0000000000000935. PMID: 32969947; PMCID: PMC8263231.
McBride KA, Ballinger ML, Killick E, Kirk J, Tattersall MH, Eeles RA, Thomas DM, Mitchell G. Li-Fraumeni syndrome: cancer risk assessment and clinical management. Nat Rev Clin Oncol. 2014 May;11(5):260-71. doi: 10.1038/nrclinonc.2014.41. Epub 2014 Mar 18. PMID: 24642672.
Nieuwenburg SA, Adan F, Ruijs MWG, Sonke GS, van Leerdam ME, Crijns MB. Cumulative risk of skin cancer in patients with Li-Fraumeni syndrome. Fam Cancer. 2020 Oct;19(4):347-351. doi: 10.1007/s10689-020-00178-1. PMID: 32356166.
Sorrell AD, Espenschied CR, Culver JO, Weitzel JN. Tumor protein p53 (TP53) testing and Li-Fraumeni syndrome : current status of clinical applications and future directions. Mol Diagn Ther. 2013 Feb;17(1):31-47. doi: 10.1007/s40291-013-0020-0. PMID: 23355100; PMCID: PMC3627545.
Thariat J, Chevalier F, Orbach D, Ollivier L, Marcy PY, Corradini N, Beddok A, Foray N, Bougeard G. Avoidance or adaptation of radiotherapy in patients with cancer with Li-Fraumeni and heritable TP53-related cancer syndromes. Lancet Oncol. 2021 Dec;22(12):e562-e574. doi: 10.1016/S1470-2045(21)00425-3. PMID: 34856153.
https://www.lfsassociation.org/what-is-lfs/treatment-preventive-screening/
Accessed May 20, 2024
Last Revised: May 21, 2024
American Cancer Society medical information is copyrighted material. For reprint requests, please see our Content Usage Policy.
American Cancer Society Emails
Sign up to stay up-to-date with news, valuable information, and ways to get involved with the American Cancer Society.