Gynecologic
ABS HDR fractionation reference plus the ESGO/ESTRO/ESP endometrial update; the endometrial source text cuts off before the adjuvant RT grades.
ESGO/ESTRO/ESP endometrial carcinoma guidelines
TL;DRJoint European guideline update: universal MMR IHC or MSI testing in all EC (III, B); molecular classification needs all four surrogate tests.
The molecular classification is valid only with all four tests (p53, MSH6, PMS2, POLE exonuclease domain), since ~5% of tumors carry multiple classifiers and a single surrogate misassigns them. That classification is reported as prognostic most clearly in high-grade and high-risk tumors, the group where adjuvant decisions are made; the RT recommendations themselves fall outside the captured excerpt.
In any newly diagnosed endometrial carcinoma, whatever the histologic subtype, this supports MMR IHC or MSI testing to triage Lynch referral (III, B); MMRd alone does not identify a germline carrier, since most cases are sporadic.
Molecular classification is prognostic mainly in high-grade and high-risk tumors, the adjuvant-decision group, and is valid only with all four tests. The adjuvant RT recommendations themselves are beyond the captured source text.
Universal MMR IHC or MSI testing serves four roles, including prediction of immune checkpoint inhibitor benefit. Lost MLH1/PMS2 requires promoter methylation testing before germline referral, since most MMRd is sporadic.
Risk-reducing hysterectomy + BSO in Lynch carriers is advised after childbearing, preferably before 40 (IV, B). Occult malignancy at prophylactic surgery reached up to 17% in one retrospective series, so pre-operative counseling and workup carry weight.
11 details
Joint ESGO/ESTRO/ESP guideline updating the 2014 European consensus. MEDLINE review of Jan 2014 to June 2019; recommendations graded on an adapted IDSA-USPHS scale (levels I-V, grades A-E), with 191 external reviewers and patient input.
Universal MMR IHC or MSI in all EC regardless of histology (III, B), with MLH1 promoter methylation testing when MLH1/PMS2 is lost. Lynch surveillance generally from age 35 and risk-reducing hysterectomy + BSO preferably before 40 (IV, B).
| Recommendation | Level, grade |
|---|---|
| Multidisciplinary tumor board planning of staging and treatment | V, A |
| Treatment in a specialized center, esp. high-risk or advanced stage | V, A |
| MMR IHC (+ MLH1 promoter methylation) or MSI in all EC, any histology | III, B |
| Genetic counseling if increased Lynch risk | III, B |
| Lynch endometrial surveillance generally from age 35, tailored | IV, B |
| Annual TVUS + annual or biennial biopsy until hysterectomy in Lynch carriers | IV, B |
| Hysterectomy + BSO after childbearing, preferably before age 40 | IV, B |
| Gene | Endometrial carcinoma | Ovarian cancer |
|---|---|---|
| MLH1 | 34% | 11% |
| MSH2 | 51% | 15% |
| MSH6 | 49% | 0% |
| PMS2 | 24% | 0% |
The molecular surrogate algorithm (p53, MSH6, PMS2, POLE) is endorsed only as a complete panel, because ~5% of tumors are multiple classifiers. POLEmut status requires a pathogenic variant in the exonuclease domain.
Literature search stopped at June 2019 and was English-only. The captured excerpt ends before the adjuvant therapy section, so RT and systemic recommendations are not reported in source text.
- Role of L1CAM or CTNNB1 in low-grade NSMP endometrioid carcinoma
- Optimal gene-specific surveillance start age in Lynch carriers
π Sources Β· π 1 paper
ABS compendium of gynecologic HDR brachytherapy fractionation
TL;DRCervix HR-CTV D90 goal 85-95 Gy EQD210; no single optimal HDR scheme for any site; doses >7 Gy/fx flagged for higher complication risk.
Portec-2EMBRACE
The EMBRACE-derived OAR limits sit below the ABS ones (rectal D2cc β€65 vs 70-75 Gy, bladder β€80 vs about 80-90 Gy EQD23), and the panel says lower doses are recommended in practice. For cuff brachy the panel picks no scheme. It flags that 0.5 cm-depth prescriptions need modifying on a 2.5 cm cylinder to keep surface dose acceptable. The longer read
The EMBRACE-derived OAR limits sit below the ABS ones (rectal D2cc β€65 vs 70-75 Gy EQD23), and the panel endorses the lower values. For the cuff it names no preferred scheme and flags that depth prescriptions need adjusting on a 2.5 cm cylinder.
12 details 1 trial watching
ABS Gynecologic Cancer Task Force compendium (Brachytherapy 2019). Experts reviewed the literature, the existing ABS guidelines and their own clinical experience, then reached consensus over conference calls. Not a systematic review.
All schemes are given as EQD210 for tumor and EQD23 for OAR, so regimens can be summed and compared. Cervix image-guided target: HR-CTV D90 85-95 Gy EQD210, starting from the Point A schedules and then optimized. Interstitial needle loading should hold no more than 10-20% of total dwell time.
The cervix target range and the tighter OAR limits (rectal D2cc β€65 Gy, bladder β€80 Gy) come from EMBRACE, not the older ABS 2012 Point A guidance. For the cuff, Portec-2 and institutional series supply the schedules, and Sorbe is the only randomized comparison of fractionation.
Several of the source tables could not be reliably paired row-to-value here, so specific scheme-to-EQD2 mappings for Point A, interstitial and inoperable uterine schedules are not reproduced. The cervix Point A schedules derive from 2012 ABS guidance and are pre-optimization starting points.
The document is a reference list of what is acceptable, not a ranking. Its practical value is the EQD2 bookkeeping and the explicit caution on >7 Gy/fx. It leaves open which cuff scheme is best and how to load newer free-trajectory interstitial applicators.
| Setting | Target | Dose goal |
|---|---|---|
| Intact cervix, image-guided | HR-CTV D90 | 85-95 Gy (90-95 Gy for larger tumors) |
| Inoperable stage I uterine, HDR alone | Uterine CTV / GTV | 48-62.5 Gy / 80-90 Gy |
| Inoperable stage I uterine, EBRT + HDR | Uterine CTV / GTV | 65-75 Gy / 80-90 Gy |
| Post-op vaginal cuff boost after EBRT | Vaginal surface (LDR equivalent) | 65-70 Gy; 70-75 Gy for superficial positive margins |
| Vaginal recurrence of uterine cancer | Vaginal lesion | at least 75 Gy EQD2 (LDR equivalent) |
| OAR | ABS limit | EMBRACE-derived |
|---|---|---|
| Rectum/sigmoid D2cc | 70-75 Gy | β€65 Gy (rectum) |
| Bladder D2cc | approximately 80-90 Gy | β€80 Gy |
| Rank | Regimen | Prescription point |
|---|---|---|
| 1 | 7 Gy x 3 | 0.5 cm depth |
| 2 | 6 Gy x 5 | Vaginal surface |
| 3 | 5.5 Gy x 4 and 5 Gy x 5 | 0.5 cm depth |
| 4 | 7.5 Gy x 5 | Vaginal surface |
| EBRT | HDR boost |
|---|---|
| 45 Gy/25 fx | 5-6 Gy x 3 (to surface) |
| 50.4 Gy/28 fx | 6 Gy x 2 (to surface) |
- Optimal vaginal cuff HDR fractionation scheme
- Outcomes of 3-fraction vs 4-5 fraction cervix HDR n=41 Β· primary completion 2028-06 Β· phase 2 3-fx vs standard 4-fx HDR, definitive cervix
- Loading patterns for newer interstitial applicators