Blood Group: Langereis
Common: Lan- phenotype is rare.
Causes HDN: Yes
Critical Titer: 1:16
Until 2013, only 3 cases have been reported of anti-Lan causing HDN and all have deemed mild [1, 3], however there has also been one severe case of HDN from anti-Lan requiring IUTs . For this reason monitoring titers followed by MCA scans is important.