Lord Coe said fairness is non-negotiable and that the sport could follow in swimming's footsteps.
Most Olympic sports use testosterone limits as a basis for inclusion because of the landmark decision.
Lord Coe said that World athletics is going to discuss a new eligibility policy.
The rules, regulations and policies of the international federation are in the best interest of the sport.
It's as it should be. We will continue to review our regulations in line with what we believe to be the true nature of biology. The science will be followed by us.
We continue to study, research and contribute to the growing body of evidence that testosterone is a key determinant in performance, and have scheduled a discussion on our regulations with our council at the end of the year.
Under Lord Coe, World athletics has introduced rules that cap testosterone levels at five nmol/L for athletes with different sex development in some running events.
With the IOC placing responsibility on individual federations to determine eligibility criteria of their own, other sports are now bringing in harsher policies.
The permitted testosterone level was lowered from 5nmol/L to 2.5nmol/L by the UCI last week.
A report by a scientific panel said that going through male puberty meant trans women retained a "relative performance advantage over biological females".
Track and field could follow in the footsteps of the Olympic governing body, which introduced a ban on trans competitors.
We've always tried to navigate. Lord Coe said they didn't want to stigmatise.
If it is a judgement between inclusion and fairness, we will always fall down on the side of fairness.
We can't have a generation of young girls thinking there is not a future for them in the sport if the integrity of women's sport is not good. Maintaining the integrity of female competition is absolutely vital, and that's why we were at the forefront of tabling those regulations that allow as close as possible to a level playing field.
If there are events, distances or disciplines that we think are being unfairly impacted, we will look at those again.
Lia Thomas, who has expressed a desire to compete for a place at the Paris Olympics, is now blocked from participating in the female category at the Games because of a new policy by the swimming governing body.
The governing body wants to establish an 'open' category for swimmers who have a different sex than their birth sex.
The NCAAs, where Thomas recently won the women's 500-yard freestyle, are not covered by its policy. British Swimming will have to decide if it is going to implement the policy.
British Swimming said it would take time to review the policy.
The inclusion of trans women in sport has caused a lot of controversy.
Karen said that she empathises with people who can't compete in the category that they identify with. I understand that it's sad, but the science shows that fairness and inclusivity can't be compatible and that's why it's sad.
The four-time Olympic champion spoke to the governing body's members before the decision was made, asking them to hold the cornerstone of fairness.
Campbell's comments were criticized by another Australian swimmer, who asked if she was ok with ostracizing an already marginalized group.
In sport, inclusion should always be the beginning. Trans people deserve to benefit from the sense of community that sport brings.
The inflammatory rhetoric surrounding the issue of trans inclusion in elite competition only perpetuates an atmosphere where trans people are not welcome.
The field of trans inclusion in sport is complex and evolving. A discussion about removing trans people from public life doesn't serve trans people well.
Megan Rapinoe is one of the most influential voices in sport.
"Show me the evidence that trans women are taking everyone's scholarships, are dominating in every sport, are winning every title. I'm sorry, it's just not happening," she told Time magazine.
We can figure it out, that's what I have faith in. We cannot start at the opposite. It's cruel. It's just repulsive. We're saying that trans people can't be successful in sports. Take a break and get a grip on reality.