00:18:28.140You know, I don't want to sound like a saint because I'm not.
00:18:31.980But in my group, I built up a large group of people, you know, who are very clever and very happy to take quite modest incomes, which, of course, academic things are.
00:18:42.420And we all agreed that a lot of people needed this and we were not going to charge private money and we didn't.
00:18:46.960So any private fees that we got from overseas patients, they were all pooled, and they went
00:31:48.560about 20% of embryo transfers result in a live baby. But that doesn't represent, of course,
00:31:55.940the beginning, because you're failing from the very start of the stimulation of the ovary to
00:32:00.820get enough eggs. So every stage is important. Now, of course, many clinics will not actually
00:32:07.140state their failures at different stages. The government doesn't even keep proper statistics
00:32:11.780on that. So we don't really know, even now, how many eggs are actually stimulated from the ovary
00:32:20.380in an average clinic. It varies so much. The records are not good, and yet they should be
00:32:25.580there because the Human Fertilization Embryability Authority was set up with a statutory obligation
00:32:31.700to provide better information to patients. That's one of my biggest grumbles about the
00:32:38.240situation at the moment. That needs to change, but it's very difficult to persuade the Department
00:32:42.940of Health. They don't really want to get involved with something which isn't supported by politicians
00:32:47.380one way or the other. To them, it's not really important. There are more important things because
00:32:51.620the health service needs so many other things. But actually, it is really important because it
00:32:56.400affects the health service money. It's expensive for patients, and it's deeply distressing to fail
00:33:02.740two or three times. For the clinic, if you fail, great, they'll come back again. If you treat them
00:33:07.020nicely and kindly, they'll come back. So, you know, actually, that increases the revenue to
00:33:12.580the clinic, but it doesn't necessarily improve the chance. We know from very good statistics,
00:33:18.500which have been done looking at five different countries, including Britain,
00:33:21.800Switzerland, France, Germany, that actually after six attempts at in vitro fertilization,
00:33:28.140six attempts, separate attempts using the full cycle, only 34% of patients have a baby after
00:33:34.200six attempts. Now, that's never said anywhere. That was published a few years ago, but I doubt
00:33:40.120if the figures have changed that much. But it never comes out in the figures.
00:33:43.480So you're only looking at about 5% success rate per attempt?
00:33:47.080Well, I don't think that's true. I think it's more than that, because I think you can improve
00:33:52.040egg quality. And of course, if you treat young patients only, you'll do better. And you can
00:33:57.560choose your patients. And of course, many clinics do that. They'll choose the patients they think of.
00:34:01.480And if you've been pregnant before, which many people have or have had a miscarriage, that will improve their chance because already they're of proven fertility.
00:34:08.960So the success rate is not 20%, but that's what will be advertised, but it will be somewhere.
00:34:17.780And one of the things that, and correct me on this if I'm wrong, I'm just telling you from a kind of layman talking to people perspective.
00:34:24.520I think we increasingly, due to various social changes in society, women wanting to pursue careers for longer, all sorts of things.
00:34:33.060We're now in a place where, I don't know, big companies routinely offer egg freezing to female employees as a way to manage this situation, let's say.
00:34:42.640But with these kind of success rates, are we telling women lies effectively about the fact that this is a way to mitigate the problem?
00:34:51.240I think it's a harsh, harsh thing to say. I think, you know, we were working on egg freezing0.83
00:34:59.760in Malabar at Free well before it was being done. And we were looking actually only freezing eggs,
00:35:04.680which have been collected, also freezing at ovarian tissue, which we think you could use
00:35:10.080perhaps to mature eggs, because you'd have better control. It's questionable that, but, you know,
00:35:15.600it's never really been a successful one or the other. If you look at really carefully conducted
00:35:22.400figures, what you see, of course, is that freezing brings a huge—it's a massive change to the
00:35:29.360embryo. Its change in a fraction of a second is a vast change in temperature. It's called
00:35:36.960vitrification. And this process has been shown to disrupt all sorts of functions in the egg.
00:35:44.960Also, of course, the antifreeze which is used is not a liquid you drink, for obvious reasons.
00:35:56.880In fact, it might be a very good way of getting rather simulating to the brain. I mean, not the
00:36:03.840way you bought, you know, it would be sleepy at best. No, I mean seriously, that's a problem.
00:36:09.200So it's also true that when you freeze a lot of eggs, sometimes the tendency in a clinic is to
00:36:18.080stimulate that ovary as much as possible to get as many eggs as possible. But of course, that then
00:36:23.280denies the possibility of the proper timed maturation of that egg at the best time when
00:36:29.040it's collected. Thereafter, it's going to be frozen. And we know that, of course,
00:36:33.440a huge proportion of frozen eggs don't thaw. I have the figures going back from when they
00:36:40.000did collect them at the HVA. And I've looked at, literally, data from several hundred thousand
00:36:48.320patients. I mean, it's a large number. And we can see that, actually, if you take from the moment
00:36:53.840of thawing, using vitrification, which is still the best method, the chances of a single egg
00:36:59.360becoming a baby is about 1%, 1.7%. Now, of course, you can produce lots of eggs,
00:37:05.840but the trouble is those batches of eggs have to be thawed at the same time. You can't just bring
00:37:12.000them because you take a lot. You have to thaw them because you're going to still want to get an
00:37:16.400embryo. So the problem is there, which has never been understood. We don't know how many eggs are
00:37:23.200being thawed by different clinics. There's no standardization of this. And so I think that's
00:37:28.160one of the things we should be recording in the Department of Health, much more carefully, by the
00:37:32.320HFEA. And of course, they're not recording many of these statistics, so we don't know how many eggs
00:37:38.480that are thawed are being fertilized, how many actually become an embryo, how many of those
00:37:42.800embryos are normal, and how many are actually put back into the uterus. All we know is the number of
00:37:47.120embryos which are actually transferred to the uterus and produce a pregnancy. With those
00:37:52.400statistics, what we can see from, we now have, apart from the publication of the stuff which
00:37:58.960I can get through Parliament by a parliamentary question, which I think is probably accurate,
00:38:04.480but now, of course, they're not keeping complete figures, so even that is difficult.
00:38:10.400There are five or six publications from different countries which show that, at best,
00:38:17.360About 4% of eggs, usually less, actually will produce,
00:38:22.520after thawing, will produce a pregnancy, a live birth.
00:38:27.440The miscarriage rate is still not recorded.
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