Sharing the results of two rounds of genetic testing for other's reference. On Mick McGill's advice above (@mickmgill) I requested a test of the PHKA1 gene, which was negative. I see now he has been banned, so perhaps that was a poor decision! In any case I list the genes I have been tested for below. All have been negative except for a mutation of the MYPN gene which had the variant c.2816C>T (p.Thr939Met) and which was found to be heterozygous. My doctors do not seem to think this is the cause of the issue and will investigate more genetic issues with further tests.
I have had the same symptoms for 16 years - pain 3 days after cycling. I also run (up to and including marathons) and occasionally have this issue there as well, albeit much less pronounced. 41 year old male. Scandinavian and Ukrainian heritage. Tried low carb, high carb, stretching, not stretching, rolling, not rolling, simple sugars, no sugar, and, of course, bananas. The only thing that works is to keep exercising - and even then only most of the time!
Good luck everyone! Thanks for the solidarity!
round 1:
ABCC9, ACTA1, ACTC1, ACTN2, AGL, AGRN, ALG14, ALG2, ANO5, ATP2A1, B3GALNT2, B4GAT1, BAG3, BIN1, CACNA1C, CACNA1S, CAPN3, CAV3, CCDC78, CFL2, CHAT, CHKB, CHRNA1, CHRNB1, CHRND, CHRNE, CLCN1, CNTN1, COL12A1, COL6A1, COL6A2, COL6A3, COLQ, CPT2, CRYAB, CSRP3, DAG1, DES, DMD, DNAJB6, DNM2, DOK7, DOLK, DPAGT1, DPM1, DPM2, DPM3, DSC2, DSG2, DSP, DYSF, EMD, EYA4, FHL1, FKBP14, FKRP, FKTN, FLNC, GAA, GFPT1, GLA, GMPPB, GNE, GYS1, HCN4, HNRNPA2B1, HNRNPDL, ISPD, ITGA7, JUP, KBTBD13, KCNJ2, KLHL40, KLHL41, LAMA2, LAMB2, LAMP2, LARGE1, LDB3, LIMS2, LMNA, LMOD3, LRP4, MATR3, MEGF10, MTM1, MUSK, MYBPC3, MYF6, MYH2, MYH7, MYL2, MYL3, MYOT, MYPN, NEB*, PKP2, PLEC, PLN, PNPLA2, POMGNT1, POMGNT2, POMK, POMT1, POMT2, PREPL, PRKAG2, RAF1, RAPSN, RBM20, RXYLT1, RYR1, RYR2, SCN4A, SCN5A, SELENON, SGCA, SGCB, SGCD, SGCG, SLC22A5, SLC5A7, SMCHD1, SMN1, SMN2, SNAP25, SQSTM1, STAC3, STIM1, SUN1, SUN2, SYNE1, SYNE2, TAZ, TCAP, TIA1, TMEM43, TNNC1, TNNI3, TNNT1, TNNT2
round 2
ACAD9, ACADM, ACADVL, AGL, ALDOA, CPT2, ETFA, ETFB, ETFDH, FKRP, GAA, GYG1, GYS1, HADHA, HADHB, ISCU, LDHA, LPIN1, PFKM, PGAM2, PGK1, PGM1, PHKA1, PYGM, RYR1, SLC22A5, SLC25A20, SUCLA2, TANGO2, TK2