for females ages 21 years and up (full criteria)
healthy people welcome
at San Francisco, California and other locations
study started
estimated completion
Vanessa Jacoby, MD



The ULTRA study is a single-arm trial of 100 premenopausal women with symptomatic uterine fibroids who undergo treatment with the Acessa device. The Acessa device is a new FDA approved minimally invasive treatment for uterine fibroids that uses radiofrequency energy to destroy fibroid tissue. The fibroids then shrink and symptoms are significantly improved. The radiofrequency energy is delivered to the fibroids during an outpatient surgical procedure. There is minimal blood loss and pain and women return to the usual activities 5-9 days after the Acessa procedure. The investigators will evaluate changes in fibroid-related symptoms from before the Acessa treatment to 3, 6, 12, 18, 24, 30, and 36 months after Acessa treatment. The investigators will also assess operative outcomes including procedure duration, complications, blood loss, post-operative pain, and the time to return to usual activities. The investigators will determine long-term efficacy of Acessa by evaluating the rate of re-treatment for symptomatic fibroids after the Acessa procedure. Study participants will be recruited at 5 sites within the UC Fibroid Network: UC Davis, UC Irvine, UC Los Angeles, UC San Diego, and UC San Francisco. UC San Francisco will serve as the Coordinating Center for the trial with oversight of all scientific and administrative aspects of the study. All study data will be stored securely in a HIPAA compliant, secure database monitored by the UC San Francisco Coordinating Center. A data safety and monitoring board will oversee participant safety and protection.


Uterine Fibroids Fibroids Radiofrequency ablation Leiomyoma Myofibroma Radiofrequency ablation of fibroids Acessa


You can join if…

Open to females ages 21 years and up

  1. Premenopausal (at least 1 menstrual period in last 3 months)
  2. Age >21years
  3. Fibroids are associated with heavy bleeding, pelvic pressure or discomfort, urinary or bowel symptoms, or dyspareunia
  4. Desires surgical management of fibroids
  5. Uterus ≤16 weeks in size
  6. All fibroids ≤ 10cm in maximum diameter by ultrasound or MRI assessment within the last year.
  7. Total number of fibroids ≤6 by ultrasound or MRI assessment within the last year. (For this study "Fibroids" will be leiomyomas > 2cm)
  8. Had a Pap smear within the last 3 years with appropriate follow-up and treatment for cellular abnormalities
  9. Endometrial biopsy indicates no hyperplasia or cancer (biopsy only required if age >45 years and has anovulatory heavy bleeding)
  10. . Able to tolerate laparoscopic surgery
  11. . Able to give informed consent

You CAN'T join if...

  1. Planned treatment for infertility
  2. Pedunculated fibroid with thin stalk (total stalk length is <25% maximum diameter of fibroid)
  3. Intracavitary (FIGO Type 0) fibroid
  4. Symptomatic fibroids are only FIGO Type 1 (submucosal with ≥ 50% intracavitary)
  5. Planned concomitant surgical procedure in addition to treatment of uterine fibroids
  6. Use of Essure or any other metallic, implantable device within pelvis
  7. Pregnancy
  8. Pelvic infection with the last 3 months
  9. History of pelvic malignancy and/or pelvic radiation
  10. . Known or high suspicion for dense pelvic adhesions
  11. . Fibroids treated by myomectomy, uterine artery embolism, radio-frequency ablation, MRI Guided focused ultrasound, or cryomyolysis within the last 3 months


  • University of California, San Francisco
    San Francisco California 94115 United States
  • University of California, Davis
    Davis California United States

Lead Scientist

  • Vanessa Jacoby, MD
    Dr. Vanessa Jacoby is an obstetrician gynecologist with a research program focused on surgical gynecology. She has studied long-term health outcomes of hysterectomy and oophorectomy. She is the principal investigator of prospective cohort study of women with BRCA1 or BRCA2 mutations who undergo risk-reducing salpingo-oophorectomy funded by the American Cancer Society.


in progress, not accepting new patients
Start Date
Completion Date
University of California, San Francisco
Fibroid Trials at UCSF
Study Type
Last Updated