Ask Our Doctors – Archive

Our Medical Directors are outstanding physicians that you will find to be very personable and compassionate, who take care to ensure that you have the most cutting-edge fertility treatments at your disposal. This is your outlet to ask your questions to the doctors.

19,771 Comments

  1. Hello Doctor,

    I went in for my first scan this past Friday. By my math I should be 8weeks 3days (based on the start of my last period) but baby only measured to be about 6weeks 3days. OBGYN ordered a blood test and my HCG levels were 40,986. She has asked for a second blood test tomorrow, exactly 48 hours later.
    I am 32, this is my first pregnancy and I’m nervous and confused. Could it be i ovulated later and all is good? What she saw on the screen did look healthy and all where it should be just measured about 2 weeks later.

    • suggest that you have another US in 1-2 weeks and determine whether interim growth is appropriate. If so your dates could be off.

      Good luck!

      Geoff Sher

  2. Hello

    My wife has HCG Test of beta 8 IUL.i just wanted to know whether she is pregnant or not.

    • There is definitely evidence of early implantation. Repeat the test in 2-4 days the level doubles every 48h, you could be OK. However, the only definitive answer would come from an US done about 2-3 weeks from now!

      Good luck!

      Geoff Sher

  3. Dear Dr Sher
    I am writing to as a desperate patient wanting some assistance please
    Our journey has been long … we started yrs ago and to date cycles later no baby.
    I was diagnosed with PCOS in my late teen and the Dr put me on Glucophage, spiractolene and a pill. When I got married we decided to try for a family about months into marriage. After a yr of trying at home with no success we consulted with a physician who then referred us to a fertility specialist.
    1st cycle – 2011, long protocol – got 10eggs, 5 fertilized – transferred 4 poor quality embryos on day 6 but suffered with ovarian hyper-stimulation during that cycle
    2nd cycle – 2012-changes clinics – Did a lap found a fibroid which was removed and began IVF. Drs tested for male factor and found out that my husband has premature testicular aging due to a congenital undescended testicle. We tried ICSI up-regulatory cycle – 4 egg, 2 fertilized – transferred 1 on day 3- negative
    3rd cycle – 2013 – ICSI cycle using gonal – 3 eggs retrieved – 2 fertilized – 1 transferred on day 3 – negative. Dr did a testis biopsy and found immature sperms cells which they grew … to use in next cycle
    4th cycle – 2014 – ICSI – same stim as above. 4 egg retrieved. 4 fertilized – none made it to day 3
    2015- changed clinics – Dr did a hysteroscopy (all fine) – put husband on clomid and sperm-pruf for 6 month. 5th cycle Did a up regulatory cycle- retrieved 8 eggs, 5 fertilised using PICSI, transferred 2 on day 5 and froze 1 (and 9 vials of washed sperm)
    2016 –1st frozen transfer- transferred 1 embryo from previous cycle with endometrial scrape and embryo glue – negative. 6th cycle – did a down regulatory cycle – 6 eggs 4 fertilised on day 5 were able to freeze 2 embryos
    2017 – 2nd frozen transfer – negative
    2018/2019 – 7th cycle – same protocol as above. 6 eggs – were able to freeze 3 blasts, 3rd frozen transfer = negative
    2020 – 4th frozen transfer – transferred 2 hatching blasts with intralipid and a day later after input from ERA results– negative. Dr recommended I see immunologist before next cycle – awaiting results of NK cells test. Tested thyroid and AMH and full hormone profile – all good. Immunologist recommended 2 caps of Daily Flora (Amipro brand) probiotics every morning with breakfast – Use (for a month): 2 caps of Olive leaf (Solgar or Solal brand) at dinner time with food and Thyroid Support Formula.
    I would appreciate all the advice I can get before I start my next and finals cycle. Looking forward to your response.

    • There is so much to talk about here. First, based upon your ovarian response to stimulation, I am not convinced that you have PCOS. Second, even though there appears to be a male factor, you are still able to generate blastocysts and that is a good thing. Third, there could be an immunologic implantation issue, but if so it is incidental and the treatment you were given for that is in my opinion completely inadequate. Third and finally, the big issue with you is in my opinion the protocol used for ovarian stimulation that needs to be reviewed thoroughly and probably revised. The latter would play the major role in optimizing egg/embryo quality.

      Whenever a patient fails to achieve a viable pregnancy following embryo transfer (ET), the first question asked is why! Was it simply due to, bad luck?, How likely is the failure to recur in future attempts and what can be done differently, to avoid it happening next time?.
      It is an indisputable fact that any IVF procedure is at least as likely to fail as it is to succeed. Thus when it comes to outcome, luck is an undeniable factor. Notwithstanding, it is incumbent upon the treating physician to carefully consider and address the causes of IVF failure before proceeding to another attempt:
      1.Age: The chance of a woman under 35Y of age having a baby per embryo transfer is about 35-40%. From there it declines progressively to under 5% by the time she reaches her mid-forties. This is largely due to declining chromosomal integrity of the eggs with advancing age…”a wear and tear effect” on eggs that are in the ovaries from birth.
      2.Embryo Quality/”competency (capable of propagating a viable pregnancy)”. As stated, the woman’s age plays a big role in determining egg/embryo quality/”competency”. This having been said, aside from age the protocol used for controlled ovarian stimulation (COS) is the next most important factor. It is especially important when it comes to older women, and women with diminished ovarian reserve (DOR) where it becomes essential to be aggressive, and to customize and individualize the ovarian stimulation protocol.
      We used to believe that the uterine environment is more beneficial to embryo development than is the incubator/petri dish and that accordingly, the earlier on in development that embryos are transferred to the uterus, the better. To achieve this goal, we used to select embryos for transfer based upon their day two or microscopic appearance (“grade”). But we have since learned that the further an embryo has advanced in its development, the more likely it is to be “competent” and that embryos failing to reach the expanded blastocyst stage within 5-6 days of being fertilized are almost invariably “incompetent” and are unworthy of being transferred. Moreover, the introduction into clinical practice about 15y ago, (by Levent Keskintepe PhD and myself) of Preimplantation Genetic Sampling (PGS), which assesses for the presence of all the embryos chromosomes (complete chromosomal karyotyping), provides another tool by which to select the most “competent” embryos for transfer. This methodology has selective benefit when it comes to older women, women with DOR, cases of unexplained repeated IVF failure and women who experience recurrent pregnancy loss (RPL).
      3.The number of the embryos transferred: Most patients believe that the more embryos transferred the greater the chance of success. To some extent this might be true, but if the problem lies with the use of a suboptimal COS protocol, transferring more embryos at a time won’t improve the chance of success. Nor will the transfer of a greater number of embryos solve an underlying embryo implantation dysfunction (anatomical molecular or immunologic).Moreover, the transfer of multiple embryos, should they implant, can and all too often does result in triplets or greater (high order multiples) which increases the incidence of maternal pregnancy-induced complications and of premature delivery with its serious risks to the newborn. It is for this reason that I rarely recommend the transfer of more than 2 embryos at a time and am moving in the direction of advising single embryo transfers …especially when it comes to transferring embryos derived through the fertilization of eggs from young women.

      4.Implantation Dysfunction (ID): Implantation dysfunction is a very common (often overlooked) cause of “unexplained” IVF failure. This is especially the case in young ovulating women who have normal ovarian reserve and have fertile partners. Failure to identify, typify, and address such issues is, in my opinion, an unfortunate and relatively common cause of repeated IVF failure in such women. Common sense dictates that if ultrasound guided embryo transfer is performed competently and yet repeated IVF attempts fail to propagate a viable pregnancy, implantation dysfunction must be seriously considered. Yet ID is probably the most overlooked factor. The most common causes of implantation dysfunction are:

      a.A“ thin uterine lining”
      b.A uterus with surface lesions in the cavity (polyps, fibroids, scar tissue)
      c.Immunologic implantation dysfunction (IID)
      d.Endocrine/molecular endometrial receptivity issues
      e.Ureaplasma Urealyticum (UU) Infection of cervical mucous and the endometrial lining of the uterus, can sometimes present as unexplained early pregnancy loss or unexplained failure following intrauterine insemination or IVF. The infection can also occur in the man, (prostatitis) and thus can go back and forth between partners, with sexual intercourse. This is the reason why both partners must be tested and if positive, should be treated contemporaneously.
      Certain causes of infertility are repetitive and thus cannot readily be reversed. Examples include advanced age of the woman; severe male infertility; immunologic infertility associated with alloimmune implantation dysfunction (especially if it is a “complete DQ alpha genetic match between partners plus uterine natural killer cell activation (NKa).
      I strongly recommend that you visit http://www.DrGeoffreySherIVF.com. Then go to my Blog and access the “search bar”. Type in the titles of any/all of the articles listed below, one by one. “Click” and you will immediately be taken to those you select. Please also take the time to post any questions or comments with the full expectation that I will (as always) respond promptly.

      •The IVF Journey: The importance of “Planning the Trip” Before Taking the Ride”
      •Controlled Ovarian Stimulation (COS) for IVF: Selecting the ideal protocol
      •IVF: Factors Affecting Egg/Embryo “competency” during Controlled Ovarian Stimulation (COS)
      •The Fundamental Requirements for Achieving Optimal IVF Success
      •Use of GnRH Antagonists (Ganirelix/Cetrotide/Orgalutron) in IVF-Ovarian Stimulation Protocols.
      •Ovarian Stimulation in Women Who have Diminished Ovarian Reserve (DOR): Introducing the Agonist/Antagonist Conversion protocol
      •Anti Mullerian Hormone (AMH) Measurement to Assess Ovarian Reserve and Design the Optimal Protocol for Controlled Ovarian Stimulation (COS) in IVF.
      •Human Growth Hormone Administration in IVF: Does it Enhances Egg/Embryo Quality and Outcome?
      •The BCP: Does Launching a Cycle of Controlled Ovarian Stimulation (COS). Coming off the BCP Compromise Response?
      •Blastocyst Embryo Transfers should be the Standard of Care in IVF
      •IVF: How Many Attempts should be considered before Stopping?
      •“Unexplained” Infertility: Often a matter of the Diagnosis Being Overlooked!
      •IVF Failure and Implantation Dysfunction:
      •The Role of Immunologic Implantation Dysfunction (IID) & Infertility (IID): PART 1-Background
      •Immunologic Implantation Dysfunction (IID) & Infertility (IID): PART 2- Making a Diagnosis
      •Immunologic Dysfunction (IID) & Infertility (IID): PART 3-Treatment
      •Thyroid autoantibodies and Immunologic Implantation Dysfunction (IID)
      •Immunologic Implantation Dysfunction: Importance of Meticulous Evaluation and Strategic Management 🙁 Case Report)
      •Intralipid and IVIG therapy: Understanding the Basis for its use in the Treatment of Immunologic Implantation Dysfunction (IID)
      •Intralipid (IL) Administration in IVF: It’s Composition; how it Works; Administration; Side-effects; Reactions and Precautions
      •Natural Killer Cell Activation (NKa) and Immunologic Implantation Dysfunction in IVF: The Controversy!
      •Endometrial Thickness, Uterine Pathology and Immunologic Factors
      •Vaginally Administered Viagra is Often a Highly Effective Treatment to Help Thicken a Thin Uterine Lining
      •Treating Out-of-State and Out-of-Country Patients at Sher-IVF in Las Vegas:
      •A personalized, stepwise approach to IVF
      •How Many Embryos should be transferred: A Critical Decision in IVF?
      ______________________________________________________
      ADDENDUM: PLEASE READ!!
      INTRODUCING SHER FERTILITY SOLUTIONS (SFS)
      Founded in April 2019, Sher Fertility Solutions (SFS) offers online (Skype/FaceTime) consultations to patients from > 40 different countries. All consultations are followed by a detailed written report presenting my personal recommendations for treatment of what often constitute complex Reproductive Issues.

      If you wish to schedule an online consultation with me, please contact my assistant (Patti Converse) by phone (800-780-7437/702-533-2691), email (concierge@SherIVF.com) or, enroll online on then home-page of my website (www.SherIVF.com).

      PLEASE SPREAD THE WORD ABOUT SFS!

      Geoff Sher

  4. Hi Dr,

    Does NKCells in the body ever kill men’s sperm inseminating through IUI?

    Does NK cells cause same issue rejecting if genotypes complete match with embryo formed through IUI and while implantation?

    • No, it has no effect on the sperm and yes, the same issues apply with IUI.

      Unless tests for immunologic implantation dysfunction (IID) are performed correctly and conducted by a one of the few reliable reproductive immunology reference laboratory in the United States, treatment will likely be unsuccessful. . In this regard it is most important that the right tests be ordered and that these be performed by a competent laboratory. There are in my opinion only a handful of reliable Reproductive Immunology Laboratories in the world and most are in the U.S.A. Also, it is my opinion that far too often, testing is inappropriate with the many redundant and incorrect tests being requested from and conducted by suboptimal laboratories. Finally for treatment to have the best chance of being successful, it is vital that the underlying type of IID (autoimmune IID versus alloimmune) be identified correctly and that the type, dosage, concentration and timing of treatments be carefully devised and implemented. I recommend that my patients be tested by ReproSource Reproductive Immunology Reference Laboratory, Boston, MA.
      WHO SHOULD UNDERGO IID TESTING?
      When it comes to who should be evaluated, the following conditions should in always raise a suspicion of an underlying IID, and trigger prompt testing:
      •A diagnosis of endometriosis or the existence of symptoms suggestive of endometriosis (heavy/painful menstruation and pain with ovulation or with deep penetration during intercourse) I would however emphasize that a definitive diagnosis of endometriosis requires visualization of the lesions at laparoscopy or laparotomy)
      •A personal or family history of autoimmune disease such as hyper/hypothyroidism (as those with elevated or depressed TSH blood levels, regardless of thyroid hormonal dysfunction), Lupus erythematosus, Rheumatoid arthritis, dermatomyositis, scleroderma etc.)
      •“Unexplained” infertility
      •Recurrent pregnancy loss (RPL)
      •A history of having miscarried a conceptus that, upon testing of products of conception, was found to have a normal numerical chromosomal configuration (euploid).
      •Unexplained IVF failure
      • “Unexplained” intrauterine growth retardation due to placental insufficiency or late pregnancy loss of a chromosomally normal baby
      What Parameters should be tested?
      In my opinion, too many Reproductive Immunologists unnecessarily unload a barrage of costly IID tests on unsuspecting patients. In most cases the initial test should be for NK cell activation, and only if this is positive, is it necessary to expand the testing.
      The parameters that require measurement include:
      oFor Autoimmune Implantation Dysfunction: Autoimmune implantation dysfunction, most commonly presents with presumed “infertility” due to such early pregnancy losses that the woman did not even know she was pregnant in the first place. Sometimes there as an early miscarriage. Tests required are: a) blood levels of all IgA, IgG and IgM-related antiphospholipid antibodies (APA’s) directed against six or seven specific phospholipids, b) both antithyroid antibodies (antithyroid and antimicrosomal antibodies), c) a comprehensive reproductive immunophenotype (RIP) and, c) most importantly, assessment of Natural Killer (NK) cell activity (rather than concentration) by measuring by their killing, using the K-562 target cell test and/or uterine cytokine measurement. As far as the ideal environment for performing such tests, it is important to recognize that currently there are only about 5 or 6, Reproductive Immunology Reference Laboratories in the U.S capable of reliably analyzing the required elements with a sufficient degree of sensitivity and specificity (in my opinion).
      oFor Alloimmune implantation Dysfunction: While alloimmune Implantation usually presents with a history of unexplained (usually repeated) miscarriages or secondary infertility (where the woman conceived initially and thereupon was either unable to conceive started having repeated miscarriages it can also present as “presumed” primary infertility. Alloimmune dysfunction is diagnosed by testing the blood of both the male and female partners for matching DQ alpha genes and NK/CTL activation. It is important to note that any DQ alpha match (partial or complete) will only result in IID when there is concomitant NK/CTL activation (see elsewhere on this blog).

      How should results be interpreted?
      Central to making a diagnosis of an immunologic implantation dysfunction is the appropriate interpretation of natural killer cell activity (NKa) .In this regard, one of the commonest and most serious errors, is to regard the blood concentration of natural killer cells as being significant. Rather it is the activity (toxicity) of NK cells that matters as mentioned. Then there is the interpretation of reported results. The most important consideration is the percentage of target cells “killed” in the “native state”. In most cases a level of >10% killing should be regarded with suspicion and >12% overtly abnormal. In my opinion, trying to interpret the effect of adding IVIG or Intralipid to the sample in order assess whether and to what degree the use of these products would have a therapeutic benefit is seriously flawed and of little benefit. Clinically relevant NK cell deactivation can only be significantly effected in vivo and takes more than a week following infusion to occur. Thus what happens in the laboratory by adding these products to the sample prior to K-562 target cell testing is in my opinion likely irrelevant.
      There exists a pervasive but blatant misconception on the part of many, that the addition of Intralipid (IL) /immunoglobulin-G IVIG) can have an immediate down-regulatory effect on NK cell activity. This has established a demand that Reproductive Immunology Reference Laboratories report on NK cell activity before and following exposure to IVIG and/or IL. However, the fact is that activated “functional” NK cells (NKa) cannot be deactivated in the laboratory. Effective down-regulation of activated NK cells can only be adequately accomplished if their activated “progenitor/parental” NK cells are first down-regulated. Thereupon once these down-regulated “precursor” NK cells are exposed to progesterone, they will begin spawning normal and functional NK cells, which takes about 10-14 days. It follows that to assess for a therapeutic response to IVIG/IL therapy would require that the patient first be treated (10-14 days prior to embryo transfer) and thereupon, about 2 weeks later, be retested. While at 1st glance this might seem to be a reasonable approach, in reality it would be of little clinical benefit because even if blood were to be drawn 10 -14 days after IL/IVIG treatment it would require an additional 10 days to receive results from the laboratory, by which time it would be far too late to be of practical advantage.

      Neither IVIG nor IL is capable of significantly suppressing already activated “functional NK cells”. For this to happen, the IL/IVIG would have to down-regulate progenitor (parent) NK cell” activity. Thus, it should be infused 10-14 several prior to ovulation or progesterone administration so that the down-regulated “progenitor/precursor” NK cells” can propagate a sufficient number of normally regulated “functional NK cell” to be present at the implantation site 7 days later. In addition, to be effective, IL/IVIG therapy needs to be combined with steroid (dexamethasone/prednisone/prednisolone) therapy to down-regulates (often) concomitantly activated T-cells.
      I strongly recommend that you visit http://www.DrGeoffreySherIVF.com. Then go to my Blog and access the “search bar”. Type in the titles of any/all of the articles listed below, one by one. “Click” and you will immediately be taken to those you select. Please also take the time to post any questions or comments with the full expectation that I will (as always) respond promptly.

      •The IVF Journey: The importance of “Planning the Trip” Before Taking the Ride”
      •Controlled Ovarian Stimulation (COS) for IVF: Selecting the ideal protocol
      •IVF: Factors Affecting Egg/Embryo “competency” during Controlled Ovarian Stimulation (COS)
      •The Fundamental Requirements for Achieving Optimal IVF Success
      •Use of GnRH Antagonists (Ganirelix/Cetrotide/Orgalutron) in IVF-Ovarian Stimulation Protocols.
      •The Role of Immunologic Implantation Dysfunction (IID) & Infertility (IID): PART 1-Background
      •Immunologic Implantation Dysfunction (IID) & Infertility (IID): PART 2- Making a Diagnosis
      •Immunologic Dysfunction (IID) & Infertility (IID): PART 3-Treatment
      •Thyroid autoantibodies and Immunologic Implantation Dysfunction (IID) Why did my IVF Fail
      •Recurrent Pregnancy Loss (RPL): Why do I keep losing my PregnanciesGenetically Testing Embryos for IVF
      •Staggered IVF
      •Staggered IVF with PGS- Selection of “Competent” Embryos Greatly Enhances the Utility & Efficiency of IVF.
      •Embryo Banking/Stockpiling: Slows the “Biological Clock” and offers a Selective Alternative to IVF-Egg Donation
      •Preimplantation Genetic Testing (PGS) in IVF: It should be Used Selectively and NOT be Routine.
      •IVF: Selecting the Best Quality Embryos to Transfer
      •Preimplantation Genetic Sampling (PGS) Using: Next Generation Gene Sequencing (NGS): Method of Choice.
      •PGS in IVF: Are Some Chromosomally abnormal Embryos Capable of Resulting in Normal Babies and Being Wrongly Discarded?
      •Immunologic Implantation Dysfunction: Importance of Meticulous Evaluation and Strategic Management 🙁 Case Report)
      •Intralipid and IVIG therapy: Understanding the Basis for its use in the Treatment of Immunologic Implantation Dysfunction (IID)
      •Intralipid (IL) Administration in IVF: It’s Composition; how it Works; Administration; Side-effects; Reactions and Precautions
      •Natural Killer Cell Activation (NKa) and Immunologic Implantation Dysfunction in IVF: The Controversy!
      •Natural Killer Cell Activation (NKa) and Immunologic Implantation Dysfunction in IVF: The Controversy!
      •Treating Out-of-State and Out-of-Country Patients at Sher-IVF in Las Vegas
      •Should IVF Treatment Cycles be provided uninterrupted or be Conducted in 7-12 Pre-scheduled “Batches” per Year
      •A personalized, stepwise approach to IVF

      ___________________________________________________________
      ADDENDUM: PLEASE READ!!
      ADDENDUM: PLEASE READ!!
      INTRODUCING SHER FERTILITY SOLUTIONS (SFS)
      Founded in April 2019, Sher Fertility Solutions (SFS) offers online (Skype/FaceTime) consultations to patients from > 40 different countries. All consultations are followed by a detailed written report presenting my personal recommendations for treatment of what often constitute complex Reproductive Issues.

      If you wish to schedule an online consultation with me, please contact my assistant (Patti Converse) by phone (800-780-7437/702-533-2691), email (concierge@SherIVF.com) or, enroll online on then home-page of my website (www.SherIVF.com).

      PLEASE SPREAD THE WORD ABOUT SFS!

      Geoff Sher

  5. Hi Dr Sher

    What are the different reasons for increase in NKC in the uterus? Is it only matching geno types embryos trying to implant? Are there any specific food intake also cause this?

    • There is an ever growing realization, recognition and acceptance of the fact that uterine immunologic dysfunction can lead to immunologic implantation dysfunction (IID) with “unexplained infertility”, “unexplained IVF failure” and “recurrent pregnancy loss (RPL)”. Although many factors that contribute to such implantation dysfunction, in the final analysis it is activated “functional” uterine natural killer cells (NKa) in association with cytotoxic-T cells (CTL), which through the production of cytotoxic cytokines (see below) damage the “root system” (trophoblast) of the embryo causing the pregnancy either to be immediately rejected, or so compromising placentation that early pregnancy loss occurs. Both immunoglobulin-G (IVIG) and intralipid (IL) therapy given in combination with corticosteroids (e.g. dexamethasone, prednisone, and prednisolone) are used to effectively reduce/down-regulate activated NK cells.

      NK cells” reach the uterus from the woman’s bone marrow, early in the menstrual cycle, as so called “parental” or “progenitor” cells. There these early NK cells proliferate under the effect of estrogens. Only upon being exposed to progesterone do they begin to propagate “functional” NK cells that release cytokines and promote implantation. The concentration of functional NK cells in the endometrium is maximal about 7 days after exposure to natural(endogenous), or synthetic (exogenous) progesterone ….i.e. corresponding to the time the time when the embryo implants into the uterine lining (endometrium).

      Functional uterine natural killer (NK) cells as well as T-helper cells are immune cells that frequent the uterine lining. They produce growth factors known as cytokines that regulate orderly implantation of the embryo and facilitate placentation (development of a functional placenta……the baby’s life line).There are of two varieties of uterine cytokines: a) TH-2 (humoral) cytokines that promote permeation of the uterine wall by the embryo’s trophoblast (“root system and, b) TH-1 (cellular) cytokines that oppose trophoblastic proliferation and permeation of the uterine wall by culling interstitial trophoblastic cells. Orderly implantation and formation of a functional placenta (lifeline of the baby) requires that TH-1 and TH2 activity be in equilibrium

      There are two categories of immunologic implantation dysfunction (IID) linked to NK cell activation (NKa).
      •Autoimmune IID. Here, there is often a personal or family history of autoimmune conditions such as Rheumatoid arthritis, Lupus Erythematosus, and thyroid autoimmune activity (e.g. Hashimoto’s hypothyroidism) etc. Autoimmune IID also occurs in about one third of cases of endometriosis (regardless of its severity).
      •Alloimmune IID. Here uterine NK cell activation results from uterine exposure to an embryo derived through fertilization of an egg by a spermatozoon which shares certain genetic (HLA/DQ alpha)characteristics with that of the mother or embryo recipient.

      In both autoimmune and alloimmune IID, the end point is excessive NKa/CTL, TH-1 release that damages the embryos trophoblast, resulting in failed implantation or early pregnancy loss.

      It is important to bear in mind that measurement of the concentration of blood NK cells has little or no relevance when it comes to assessing NK cell activation (NKa). Rather it is the degree of NK cell activation (cytotoxicity) that matters. In fact there are certain conditions (such as with endometriosis) where the NK cell blood concentrations is normal or well below normal and NK cell activation is markedly increased.

      There are several methods by which NK cell activation (cytotoxicity) can be assessed in the laboratory. Methods such as immunohistochemical assessment of uterine NK cells and/or TH-1 and TH-2 cytokines have been used with some success. However, use of the K-562 target cell test remains the gold standard. With this test, NK cells are isolated from the woman’s blood using Flow Cytometry and are incubated in the presence of specific “target cells”. These are then incubated together. The percentage (%) of “target cells” killed through exposure to NKa/CTL-TH1 cytokines is then quantified.

      Currently, there are less than a half dozen Reproductive Immunology Reference Laboratories in the U.S.A that are capable of performing the K-562 Target cell test reliably. I have for 20 + years been working with Reproductive Immunology Associates (RIA) in Van Nuys, CA and preferentially recommend them to my patients.

      There exist a pervasive but blatant misconception on the part of many, that the addition of IL/IVIG can have an immediate down-regulatory effect on NK cell activity. This has established a demand that Reproductive Immunology Reference Laboratories report on NK cell activity before and following exposure to IVIG and/or IL. However, the fact is that activated “functional” NK cells (NKa) cannot be deactivated in the laboratory. Effective down-regulation of activated NK cells can only be adequately accomplished if their activated “progenitor/parental” NK cells are first down-regulated. Thereupon once these down-regulated “precursor” NK cells are exposed to progesterone, they will begin spawning normal and functional NK cells. This process takes about 10-14 days. It follows that to assess for a therapeutic response to IVIG/IL therapy would require that the patient first be treated (10-14 days prior to embryo transfer) and thereupon, about 2 weeks later, be retested. While at 1st glance this might seem to be a reasonable approach, it is in reality would be of little clinical benefit because even if blood were to be drawn 10 -14 days after IL/IVIG treatment it would require an additional 10 days to receive results from the laboratory and by that time it would be far too late to be of practical advantage.

      Neither IVIG nor IL is capable of significantly suppressing already activated “functional NK cells”. For this to happen, the IL/IVIG would have to down-regulate progenitor (parent) NK cell” activity. Thus it should be infused several days prior to ovulation or progesterone administration so that the down-regulated “progenitor/precursor” NK cells” can propagate a sufficient number of normally regulated “functional NK cell” to be present at the implantation site 7 days later.

      It is very regrettable that so many patients are being denied the ability to go from “infertility to family” simply because (for whatever reason) so many reproductive specialists refuse to embrace the role of immunologic factors in the genesis of intractable reproductive dysfunction. Hopefully this will change …and the sooner the better.

      I strongly recommend that you visit http://www.DrGeoffreySherIVF.com. Then go to my Blog and access the “search bar”. Type in the titles of any/all of the articles listed below, one by one. “Click” and you will immediately be taken to those you select. Please also take the time to post any questions or comments with the full expectation that I will (as always) respond promptly.

      •The IVF Journey: The importance of “Planning the Trip” Before Taking the Ride”
      •Controlled Ovarian Stimulation (COS) for IVF: Selecting the ideal protocol
      •IVF: Factors Affecting Egg/Embryo “competency” during Controlled Ovarian Stimulation (COS)
      •The Fundamental Requirements for Achieving Optimal IVF Success
      •Use of GnRH Antagonists (Ganirelix/Cetrotide/Orgalutron) in IVF-Ovarian Stimulation Protocols.
      •The Role of Immunologic Implantation Dysfunction (IID) & Infertility (IID): PART 1-Background
      •Immunologic Implantation Dysfunction (IID) & Infertility (IID): PART 2- Making a Diagnosis
      •Immunologic Dysfunction (IID) & Infertility (IID): PART 3-Treatment
      •Thyroid autoantibodies and Immunologic Implantation Dysfunction (IID) Why did my IVF Fail
      •Recurrent Pregnancy Loss (RPL): Why do I keep losing my PregnanciesGenetically Testing Embryos for IVF
      •Staggered IVF
      •Staggered IVF with PGS- Selection of “Competent” Embryos Greatly Enhances the Utility & Efficiency of IVF.
      •Embryo Banking/Stockpiling: Slows the “Biological Clock” and offers a Selective Alternative to IVF-Egg Donation
      •Preimplantation Genetic Testing (PGS) in IVF: It should be Used Selectively and NOT be Routine.
      •IVF: Selecting the Best Quality Embryos to Transfer
      •Preimplantation Genetic Sampling (PGS) Using: Next Generation Gene Sequencing (NGS): Method of Choice.
      •PGS in IVF: Are Some Chromosomally abnormal Embryos Capable of Resulting in Normal Babies and Being Wrongly Discarded?
      •Immunologic Implantation Dysfunction: Importance of Meticulous Evaluation and Strategic Management 🙁 Case Report)
      •Intralipid and IVIG therapy: Understanding the Basis for its use in the Treatment of Immunologic Implantation Dysfunction (IID)
      •Intralipid (IL) Administration in IVF: It’s Composition; how it Works; Administration; Side-effects; Reactions and Precautions
      •Natural Killer Cell Activation (NKa) and Immunologic Implantation Dysfunction in IVF: The Controversy!
      •Natural Killer Cell Activation (NKa) and Immunologic Implantation Dysfunction in IVF: The Controversy!
      •Treating Out-of-State and Out-of-Country Patients at Sher-IVF in Las Vegas
      •Should IVF Treatment Cycles be provided uninterrupted or be Conducted in 7-12 Pre-scheduled “Batches” per Year
      •A personalized, stepwise approach to IVF

      ___________________________________________________________
      ADDENDUM: PLEASE READ!!
      ADDENDUM: PLEASE READ!!
      INTRODUCING SHER FERTILITY SOLUTIONS (SFS)
      Founded in April 2019, Sher Fertility Solutions (SFS) offers online (Skype/FaceTime) consultations to patients from > 40 different countries. All consultations are followed by a detailed written report presenting my personal recommendations for treatment of what often constitute complex Reproductive Issues.

      If you wish to schedule an online consultation with me, please contact my assistant (Patti Converse) by phone (800-780-7437/702-533-2691), email (concierge@SherIVF.com) or, enroll online on then home-page of my website (www.SherIVF.com).

      PLEASE SPREAD THE WORD ABOUT SFS!

      Geoff Sher