Expertise in
11
conditions

Dr. Cynthia X. Ma

Oncology
The Siteman Cancer Center Medical Oncology
10 Barnes West Dr, 
Saint Louis, MO 
Clinical Trials:Currently Recruiting for 1 Trial
Accepting New Patients
Offers Telehealth
Expertise in
11
conditions
The Siteman Cancer Center Medical Oncology
10 Barnes West Dr, 
Saint Louis, MO 

Overview

Cynthia Ma is an Oncologist practicing medicine in Saint Louis, Missouri.

Dr. Ma is highly rated in 11 conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Triple-Negative Breast Cancer, PIK3CA-Related Overgrowth Spectrum, and HER2 Negative Breast Cancer.

She is actively involved in clinical research, co-authoring 180 peer reviewed articles and participating in 31 clinical trials. Dr. Ma is currently accepting new patients.

Specialties

Oncology

Licenses

Internal Medicine in MO

Hospital Affiliations

Barnes-Jewish St Peters Hospital
Barnes-Jewish West County Hospital
Barnes Jewish Hospital
Memorial Hospital
Missouri Baptist Medical Center

Languages Spoken

English

Gender

Female

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Celtic
  • HMO
  • INSURANCE PLAN
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Cox Health
  • EPO
  • PPO
Devoted Health
  • MEDICARE MAPD
  • OTHER MEDICARE
Essence Healthcare
  • INSURANCE PLAN
  • MEDICARE MAPD
Health Alliance
  • EPO
  • HMO
  • POS
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Home State Health
  • EPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Meridian Choice
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
TeamCare
  • OTHER COMMERCIAL
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 13 Less Insurance Carriers -

Locations

The Siteman Cancer Center Medical Oncology
10 Barnes West Dr, Saint Louis, MO 63141
Other Locations
Washington University School of Medicine
4921 Parkview Pl, Saint Louis, MO 63110

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

30 Clinical Trials

MammaPrint, BluePrint, and Full-genome Data Linked With Clinical Data to Evaluate New Gene EXpression Profiles: An Adaptable Registry (FLEX)
MammaPrint, BluePrint, and Full-genome Data Linked With Clinical Data to Evaluate New Gene EXpression Profiles: An Adaptable Registry (FLEX)
Enrollment Status: Recruiting
Publish Date: August 20, 2025
Intervention Type: Diagnostic test
A Randomized Phase I/II Trial of Fulvestrant and Abemaciclib in Combination With Copanlisib (FAC) Versus Fulvestrant and Abemaciclib Alone (FA) for Endocrine-Resistant, Hormone Receptor Positive, HER2 Negative Metastatic Breast Cancer (FAC vs FA)
A Randomized Phase I/II Trial of Fulvestrant and Abemaciclib in Combination With Copanlisib (FAC) Versus Fulvestrant and Abemaciclib Alone (FA) for Endocrine-Resistant, Hormone Receptor Positive, HER2 Negative Metastatic Breast Cancer (FAC vs FA)
Enrollment Status: Active_not_recruiting
Publish Date: September 08, 2026
Intervention Type: Procedure, Drug
Study Drugs: Abemaciclib, Copanlisib Hydrochloride, Fulvestrant
Study Phase: Phase 1
A Randomized Phase II Trial of Tamoxifen Versus Z-Endoxifen HCL in Postmenopausal Women With Metastatic Estrogen Receptor Positive, HER2 Negative Breast Cancer
A Randomized Phase II Trial of Tamoxifen Versus Z-Endoxifen HCL in Postmenopausal Women With Metastatic Estrogen Receptor Positive, HER2 Negative Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: August 28, 2026
Intervention Type: Other, Drug
Study Drugs: Endoxifen Hydrochloride, Tamoxifen Citrate
Study Phase: Phase 2
A Randomized Phase III Trial of Endocrine Therapy Plus Entinostat/Placebo in Patients With Hormone Receptor-Positive Advanced Breast Cancer
A Randomized Phase III Trial of Endocrine Therapy Plus Entinostat/Placebo in Patients With Hormone Receptor-Positive Advanced Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: August 04, 2026
Intervention Type: Other, Procedure, Drug
Study Drugs: Entinostat, Exemestane, Goserelin, Goserelin Acetate
Study Phase: Phase 3
Phase Ib/II Study to Evaluate Safety and Tolerability of Neoadjuvant Nivolumab and Chemotherapy in Patients With Localized Triple-negative Breast Cancer
Phase Ib/II Study to Evaluate Safety and Tolerability of Neoadjuvant Nivolumab and Chemotherapy in Patients With Localized Triple-negative Breast Cancer
Enrollment Status: Terminated
Publish Date: July 09, 2026
Intervention Type: Drug, Procedure, Biological
Study Drugs: Paclitaxel, Carboplatin, Nivolumab, Cabiralizumab
Study Phase: Phase 1/Phase 2
EMBER: A Phase 1a/1b Study of LY3484356 Administered as Monotherapy and in Combination With Anticancer Therapies for Patients With ER+ Locally Advanced or Metastatic Breast Cancer and Other Select Non-Breast Cancers
EMBER: A Phase 1a/1b Study of LY3484356 Administered as Monotherapy and in Combination With Anticancer Therapies for Patients With ER+ Locally Advanced or Metastatic Breast Cancer and Other Select Non-Breast Cancers
Enrollment Status: Active_not_recruiting
Publish Date: June 22, 2026
Intervention Type: Drug
Study Drugs: LY3484356, Abemaciclib, Everolimus, Alpelisib, Trastuzumab, Aromatase Inhibitor
Study Phase: Phase 1
ALTernate Approaches for Clinical Stage II or III Estrogen Receptor Positive Breast Cancer Neoadjuvant TrEatment (ALTERNATE) in Postmenopausal Women: A Phase III Study
ALTernate Approaches for Clinical Stage II or III Estrogen Receptor Positive Breast Cancer Neoadjuvant TrEatment (ALTERNATE) in Postmenopausal Women: A Phase III Study
Enrollment Status: Active_not_recruiting
Publish Date: June 05, 2026
Intervention Type: Drug
Study Drugs: Fulvestrant, Anastrozole
Study Phase: Phase 3
BYLieve: A Phase II, Multicenter, Open-label, Three-cohort, Non- Comparative Study to Assess the Efficacy and Safety of Alpelisib Plus Fulvestrant or Letrozole in Patients With PIK3CA Mutant, Hormone Receptor (HR) Positive, HER2-negative Advanced Breast Cancer (aBC), Who Have Progressed on or After Prior Treatments
BYLieve: A Phase II, Multicenter, Open-label, Three-cohort, Non- Comparative Study to Assess the Efficacy and Safety of Alpelisib Plus Fulvestrant or Letrozole in Patients With PIK3CA Mutant, Hormone Receptor (HR) Positive, HER2-negative Advanced Breast Cancer (aBC), Who Have Progressed on or After Prior Treatments
Enrollment Status: Completed
Publish Date: January 13, 2026
Intervention Type: Drug
Study Drugs: Alpelisib, Fulvestrant, Letrozole, Goserelin, Leuprolide
Study Phase: Phase 2
A Phase II Trial of Neoadjuvant PD 0332991, a Cyclin-Dependent Kinase (Cdk) 4/6 Inhibitor, in Combination With Anastrozole in Women With Clinical Stage 2 or 3 Estrogen Receptor Positive and HER2 Negative Breast Cancer
A Phase II Trial of Neoadjuvant PD 0332991, a Cyclin-Dependent Kinase (Cdk) 4/6 Inhibitor, in Combination With Anastrozole in Women With Clinical Stage 2 or 3 Estrogen Receptor Positive and HER2 Negative Breast Cancer
Enrollment Status: Active_not_recruiting
Publish Date: December 09, 2025
Intervention Type: Procedure, Drug
Study Drugs: PD0332991, Anastrozole, Goserelin
Study Phase: Phase 2
Effects of Bright Light on Co-occurring Cancer-related Symptoms in Breast Cancer Survivors: A Personalized Intervention
Effects of Bright Light on Co-occurring Cancer-related Symptoms in Breast Cancer Survivors: A Personalized Intervention
Enrollment Status: Completed
Publish Date: June 10, 2025
Intervention Type: Other, Diagnostic test
Study Phase: Not Applicable
View 9 Less Clinical Trials

180 Total Publications

Cathepsin B-activated vitamin E prodrugs target cancer stem cells and enhance chemotherapy response in triple-negative breast cancer with minimal cardiotoxicity.
Cathepsin B-activated vitamin E prodrugs target cancer stem cells and enhance chemotherapy response in triple-negative breast cancer with minimal cardiotoxicity.
Journal: Journal of drug targeting
Published: July 27, 2026
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Frequently Asked Questions about Dr. Cynthia X. Ma

How do I make an appointment with Dr. Cynthia X. Ma?

You can book an appointment with Dr. Cynthia X. Ma by calling their office at 314-996-8270. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Cynthia X. Ma a top-rated expert for Breast Cancer?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Cynthia X. Ma is classified as an Elite expert for Breast Cancer, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Cynthia X. Ma specialize in?

While Dr. Cynthia X. Ma is a Oncology, they have specific expertise in Breast Cancer, Triple-Negative Breast Cancer, and PIK3CA-Related Overgrowth Spectrum. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Oncology.

Does Dr. Cynthia X. Ma participate in research or clinical trials?

Yes. Dr. Cynthia X. Ma has published 180 articles and abstracts on conditions like Breast Cancer. You can view a list of Dr. Cynthia X. Ma's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Cynthia X. Ma accept my insurance?

Dr. Cynthia X. Ma accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 314-996-8270 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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