Approach to Repeated IVF Failure After Endometriosis Excision + Donor IVF + GnRH Agonist Protocol, With Prior Genital TB

Step 1 - Re-evaluate the Uterine Environment (Most Critical)

1a. Chronic Endometritis (CE)

• Hysteroscopy + directed endometrial biopsy (CD138 immunohistochemistry for plasma cells)
• CE prevalence in RIF is 30-60% in some series
• History of genital TB strongly predisposes to subclinical chronic endometritis, even post-treatment
• Treatment: Doxycycline 200 mg/day x 14 days, or Ciprofloxacin + Metronidazole combination. Repeat biopsy to confirm resolution before next transfer
• Reference: Inflammatory mechanisms in chronic endometritis (PMID 40977728)

1b. TB-Related Endometrial Damage - The Hidden Culprit

• Genital TB causes endometrial fibrosis, Asherman's-like synechiae, and permanent impairment of endometrial receptivity - even after "successful" ATT completion
• TB-related endometrial damage may be irreversible in severe cases (thin, fibrotic endometrium)
• Evaluate:
  • Hysteroscopy to look for synechiae, pale/fibrotic endometrium, lost glandular pattern
  • Endometrial thickness and trilaminar pattern on USS - if endometrium is thin (<7 mm) or non-trilaminar, this is a major barrier
  • IGRA/TST to confirm no latent reactivation risk (literature suggests even latent TB affects ovarian reserve and endometrium)
• Latent/subclinical re-activation must be considered: Some Indian studies (Dam et al. 2006) found latent genital TB in a significant proportion of RIF cases in India
• A PCR for Mycobacterium tuberculosis on endometrial tissue (Endometrial TB-PCR) should be performed

1c. ERA Test (Endometrial Receptivity Analysis)

• In HRT-FET cycles, the window of implantation may be displaced (particularly post-endometriosis surgery + TB damage)
• ERA identifies whether the endometrium is pre-receptive, receptive, or post-receptive
• In one study, ~25% of RIF patients had displaced windows; personalized embryo transfer (pET) significantly improved outcomes
• This is a high-yield test in this case given TB + endometriosis history

1d. Full Uterine Cavity Assessment

• Office hysteroscopy to rule out intracavitary pathology: polyps, submucosal fibroids, septa, adhesions, synechiae
• TB synechiae in particular can be subtle and missed on saline infusion sonography

Step 2 - Thrombophilia and Immunological Workup

Step 3 - Optimize the Endometrial Environment Before Next Transfer

3a. Endometrial Scratch / Injury

• Deliberate endometrial injury in the cycle before transfer
• Meta-analyses show modest benefit in RIF patients (improves receptivity via local inflammatory response)

3b. Intrauterine PRP (Platelet-Rich Plasma)

• Particularly useful in thin endometrium (common in TB cases)
• PRP infusion x 3 doses in follicular phase can improve endometrial thickness and receptivity
• G-CSF (Granulocyte Colony Stimulating Factor) intrauterine infusion is an alternative (especially for thin endometrium <7 mm)

3c. HRT Protocol Optimization

• Standard estradiol + progesterone HRT was used - but consider:
  • Vaginal + rectal progesterone or switch to progesterone injections (IM) if vaginal absorption may be suboptimal
  • Extend estrogen priming duration
  • Add low-dose aspirin (75-100 mg/day) for uterine blood flow
  • Consider Sildenafil vaginal suppositories if endometrial thickness is a problem (improves blood flow)

3d. Immunosuppression

• Prednisolone 10-25 mg/day from embryo transfer
• Hydroxychloroquine (if autoimmune markers)
• Intralipid infusion (20% solution, 100 mL IV) - at time of oocyte retrieval equivalent and post-transfer

Step 4 - Embryo-Side Considerations

• PGT-A (Preimplantation Genetic Testing for Aneuploidy) on donor embryos - while donor eggs are usually young/good quality, aneuploidy can still occur; confirm this was done
• Embryo morphokinetics (time-lapse incubation) - select best embryo based on developmental kinetics
• ICSI vs IVF for donor sperm/egg combination
• Blastocyst vs Day 3 transfer - if not already blastocyst, upgrade; Day 5 blastocyst transfer has higher implantation rates

Step 5 - Reconsider the Endometriosis

• Grade 4 DIE with 3 doses of GnRH agonist + excision was done - this is appropriate
• However, consider repeat pelvic MRI to rule out disease recurrence or persistent DIE nodules affecting uterine/endometrial vascularity
• Post-excision, the uterine environment may still have residual inflammatory cytokines; timing of IVF relative to surgery matters
• British Fertility Society (2024) guidelines suggest at least 3 months post-surgery before IVF for grade 3-4 disease to allow healing and immune normalization

Step 6 - Male Factor (Often Overlooked)

• If sperm DNA fragmentation was not assessed, do it now (even for donor IVF using husband's sperm)
• High DFI (>25%) reduces implantation rates even with donor eggs
• Testicular sperm extraction (TESE) may give better-quality sperm in high DFI cases
• Antioxidant therapy for 3 months if high DFI

Step 7 - Addressing the TB History Specifically

1. TB-PCR of endometrial biopsy - rule out residual/recurrent bacilli (rare but important)
2. Hysteroscopy evaluation - TB can permanently scar and destroy endometrial glands (Netter's phenomenon)
3. If endometrium appears fibrotic/thin and non-responsive to HRT: consider uterine regeneration protocols (stem cells, PRP, G-CSF - still experimental but increasingly used in India for TB-damaged endometrium)
4. If endometrial lining is irreparably damaged: gestational surrogacy may need to be discussed
5. Some centers offer PRIMED cycles (prolonged estrogen priming) or E2 + Letrozole protocols to boost thin endometrium

Summary Priority Checklist for Next Cycle

Key Literature

• RIF etiology and treatment - comprehensive review (PMID 36686483) - outlines immunological, anatomical, and receptivity causes with individualized treatment approach
• Endometriosis and IVF outcomes meta-analysis - Healthcare 2024 - confirms endometriosis-specific challenges persist even with donor oocytes
• Endometriosis and IVF management - PMC 11356404 - extended GnRH downregulation post-surgery does NOT improve IVF outcomes (confirming that simply repeating the same protocol is unlikely to work)
• Latent genital TB and IVF outcomes (Frontiers 2025) - latent/treated TB significantly impairs endometrial function