A previous IVF failure does not close the path to parenthood. It changes it. The couple who arrives at Nova IVF Fertility Centre, Kolkata after a failed cycle elsewhere arrives with information that was not available before treatment began — information about how the ovaries responded, how many eggs were retrieved, what fertilisation rate was achieved, how embryos developed, and whether implantation occurred at all. That information is clinical data, and at Nova IVF Kolkata, it is the starting point of a fundamentally different evaluation. The type of fertility treatments available at Nova IVF Fertility Centre, Kolkata for couples with previous IVF failure spans a broader and more precisely targeted spectrum than most fertility centres offer, from an investigation into why the previous cycle failed through to advanced embryology techniques and modified protocols designed for the specific clinical profile of each couple.
Why Previous IVF Failure Requires a Different Starting Point
Most fertility centres approach the couple with a previous failed cycle in one of two ways: recommend repeating the same protocol with minor modifications, or recommend moving to donor eggs. Neither is appropriate as a first step without completing a thorough investigation of why the previous cycle failed.
The causes of IVF failure fall across three domains: embryo factors (chromosomal abnormality, sperm DNA damage), endometrial and uterine factors (chronic endometritis, displaced implantation window, structural abnormalities), and immunological or coagulation factors (antiphospholipid syndrome, thrombophilia). Each requires specific investigation, and the investigation drives the treatment.
Nova IVF Fertility Centre, Kolkata conducts a structured failed cycle review as the starting point for all couples presenting after previous IVF failure, covering all three domains concurrently.
The Fertility Treatments Available at Nova IVF Fertility Centre, Kolkata
Nova IVF Fertility Centre in Kolkata combines advanced reproductive technologies with precision diagnostics to address complex infertility and recurrent cycle failures. By personalizing treatment protocols from genetic embryo screening and uterine receptivity mapping to specialized sperm selection the clinic delivers targeted solutions designed to optimize implantation and live birth rates.
Treatment 1: PGT-A Chromosomal Screening of Embryos
Preimplantation Genetic Testing for Aneuploidy (PGT-A) is the most direct intervention for couples whose previous failure was driven by chromosomal embryo abnormality. Chromosomally abnormal embryos that look morphologically normal under standard grading cannot implant or produce a viable pregnancy. Without PGT-A, these embryos are indistinguishable from normal ones using conventional assessment.
At Nova IVF Kolkata, trophectoderm biopsy of blastocyst-stage embryos is performed, and next-generation sequencing identifies whether each embryo has the correct number of chromosomes. Only euploid embryos are transferred. The transfer of a single confirmed euploid embryo produces implantation rates that are largely age-independent, removing age as the dominant determinant and replacing it with chromosomal quality.
PGT-A is indicated for couples with two or more failed IVF cycles where good-quality embryos were transferred, women over 37, couples with recurrent pregnancy loss, and any couple where previous blastocysts failed to implant despite good morphological grading.
Treatment 2: ERA Testing Personalised Embryo Transfer Timing
The ERA test (Endometrial Receptivity Analysis) identifies whether the endometrium is receptive at the standard progesterone exposure timing assumed in frozen embryo transfer protocols. Approximately 25 percent of women with recurrent implantation failure have a displaced window — the endometrium is not receptive at the standard transfer time even though it appears morphologically normal on ultrasound.
At Nova IVF Kolkata, ERA testing involves a mock frozen embryo transfer cycle where an endometrial biopsy is taken at the planned transfer timing. Next-generation sequencing of 248 genes determines receptivity status: pre-receptive, receptive, or post-receptive. For women with a displaced window, the subsequent transfer is timed to the personalised window identified by the ERA result.
ERA is offered for couples with two or more failed transfers of good-quality embryos despite adequate endometrial preparation, and for any couple with unexplained implantation failure where endometrial morphology is confirmed as normal.
Treatment 3: Chronic Endometritis Diagnosis and Treatment
Chronic endometritis is a subclinical bacterial infection of the uterine lining that produces no obvious symptoms but creates an inflammatory uterine environment hostile to implantation. It is found in 10 to 40 percent of women investigated for recurrent implantation failure and is consistently missed because it cannot be detected by standard ultrasound, routine blood tests, or conventional biopsy without CD138 immunohistochemistry staining.
At Nova IVF Kolkata, diagnosis is conducted by hysteroscopy with endometrial biopsy and CD138 plasma cell staining. When confirmed, targeted antibiotic treatment is initiated and the endometrium allowed to recover before the next embryo transfer. Studies confirm significant improvement in implantation and live birth rates in women with RIF who have chronic endometritis treated before their subsequent transfer.
Treatment 4: ICSI With Advanced Sperm Selection
ICSI is the standard fertilisation method at Nova IVF Kolkata. For couples where sperm DNA fragmentation has contributed to previous failure, advanced sperm selection technologies are applied:
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PICSI (Physiological ICSI): Hyaluronan-binding sperm selection sperm that bind to hyaluronan demonstrate maturity and correlate with lower DNA fragmentation and better fertilisation rates.
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MACS (Magnetic-Activated Cell Sorting): Magnetic beads remove sperm with fragmented DNA from the preparation, leaving only intact-DNA sperm for ICSI. Used for men with confirmed high sperm DNA fragmentation index.
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IMSI (Intracytoplasmic Morphologically Selected Sperm Injection): 6,000x magnification sperm selection allowing rejection of sperm with vacuoles or nuclear abnormalities invisible at standard 200 to 400x microscopy.
Sperm DNA fragmentation testing is conducted concurrently with the female workup at Nova IVF Kolkata's first consultation for previous IVF failure couples, identifying the male-factor contribution most frequently missed at standard fertility centres.
Treatment 5: Modified Stimulation Protocols for Poor Responders
For couples whose previous failure was associated with poor ovarian response and insufficient egg numbers, Nova IVF Kolkata applies modified stimulation protocols:
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GnRH Antagonist Protocol: Stimulation begins immediately without downregulation, preserving the existing follicular cohort.
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Minimal Stimulation IVF: Low-dose gonadotrophins combined with oral clomiphene or letrozole recruit the genuinely available follicles. Dr. Preeti Mahawar at Nova IVF Kolkata presented specific research on minimal stimulation in poor responders at ISAR Bengal 2016.
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Adjuvant Testosterone Priming: Short-course transdermal testosterone before stimulation increases androgen receptor expression in follicles, potentially improving response in diminished ovarian reserve patients.
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Growth Hormone Adjuvant: Co-administration during stimulation improves oocyte yield and quality in poor responders in multiple randomised trials.
Treatment 6: Freeze-All and Single Euploid Embryo Transfer Strategy
For couples who have previously had fresh transfers that failed, Nova IVF Kolkata applies a freeze-all and single euploid embryo transfer strategy. All embryos are vitrified following retrieval without a fresh transfer. In a subsequent cycle, the endometrium is prepared optimally and a single confirmed euploid embryo is transferred at the personalised receptivity window identified by ERA.
This combination eliminates several contributing causes of fresh transfer failure simultaneously: it removes the supraphysiological hormonal environment from the transfer, allows full endometrial recovery, permits PGT-A chromosomal screening, and allows ERA timing personalisation.
Treatment 7: Immunological and Coagulation Intervention
For couples where immunological or thrombophilic causes are identified:
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Low molecular weight heparin (LMWH) for confirmed thrombophilia from embryo transfer through the first trimester
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Aspirin for antiphospholipid syndrome alongside LMWH
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Intralipid or intravenous immunoglobulin (IVIG) for selected patients with elevated uterine natural killer cell activity within a defined evidence-based protocol
Treatment 8: Donor Egg and Donor Embryo IVF
When the failed cycle review confirms that own-egg IVF has a genuinely low probability of success, Nova IVF Kolkata offers donor egg IVF and donor embryo adoption under India's 2021 ART Regulation Act. Donors are anonymous, health-screened, and typically under 30.
Donor egg IVF achieves significantly higher success rates than own-egg IVF in women with severely diminished ovarian reserve or multiple chromosomally abnormal own-egg embryos, because the chromosomal quality of the egg is supplied by a young, healthy donor.
The Specialist Team at Nova IVF Kolkata for Previous IVF Failure
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Dr. Aindri Sanyal (Clinical Director, FNB Reproductive Medicine): Over 4,000 IVF cycles. ISAR Young Talent Award 2022. Focus: recurrent IVF failure, third-party reproduction, advanced maternal age.
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Dr. Anindita Singh (24 years experience, 2,000+ cycles, ART Diploma Kiel Germany): PCOS, endometriosis, Asherman's syndrome, dual trigger protocol research (ISAR 2017).
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Dr. Preeti Mahawar (20+ years, ART Diploma ISRME): Decreased ovarian reserve, poor responders, minimal stimulation research (ISAR Bengal 2016).
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Dr. Rohit Gutgutia (19 years): Complex IVF and combined male-female factor.
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Dr. Suparna Bhattacharya: IVF and ICSI specialist.
Plan Your Second Chance at IVF With Karetrip
Navigating a previous IVF failure can feel emotionally exhausting and medically confusing, but you do not have to figure out your next steps alone. Through Karetrip, couples gain direct, streamlined access to the senior fertility specialists and advanced embryology labs at Nova IVF Fertility Centre, Kolkata.
From organizing an independent review of your past cycle data to coordinating specialized diagnostic appointments and travel logistics, your dedicated Patient Care Manager ensures your treatment journey is clear, predictable, and fully supported.
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Priority Medical Consultations: Fast-track your appointment with top reproductive specialists without hospital waitlists.
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Complete Record Review: Expert pre-assessment of your previous stimulation protocols and embryology reports before you travel.
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Transparent Pricing: Clear cost estimates across all advanced diagnostics including PGT-A, ERA, and sperm selection technologies.
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Dedicated Care Support: End-to-end guidance for local and international couples from the first inquiry to post-transfer care.
Chat with our medical assistant for quick guidance and support.